Low Ph
Printed From: Utah Reefs
Category: Help
Forum Name: General Help
Forum Description: The place to ask about pest, problems, hitchhikers, etc.
URL: http://www.utahreefs.com/forum/forum_posts.asp?TID=56901
Printed Date: June 30 2026 at 4:04am Software Version: Web Wiz Forums 12.03 - http://www.webwizforums.com
Topic: Low Ph
Posted By: lskurys
Subject: Low Ph
Date Posted: June 03 2012 at 2:55pm
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My ph has been dropping a little bit over the last few days. All of my other numbers look good just the ph has be dropping. Until a week ago my ph would be between 8.03 to 8.33. With in the last 3 days my ph has dropped like crazy. I am now 7.73 to 8.01 and my I am not sure if I should get some pickling lime. With the pickling lime I think I am 2-3 days out from being able to dose. Any ideas on how to up my ph sooner than later? Salt = 1.025 Akl/KH = 8.5 mag = 1350 Cal = 460 Anm, NO2, NO3 all 0
------------- 220g , large elite aquatics sump. 3 Radion Pro Gen 3 lights 3 Mp 40's
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Replies:
Posted By: badfinger
Date Posted: June 03 2012 at 3:01pm
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Why are you 2-3 days out on dosing pickling lime?
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Posted By: lskurys
Date Posted: June 03 2012 at 3:04pm
I though that you had to let it sit for a couple of days after mixing the lime with RO? I have read 2 sets of instructions and both said you needed the mix to sit. They were both old articals so the info could have changed.
Also is there a good place to get it around here?
------------- 220g , large elite aquatics sump. 3 Radion Pro Gen 3 lights 3 Mp 40's
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Posted By: badfinger
Date Posted: June 03 2012 at 3:08pm
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Its the same as kalkwasser, but walmart sells it in their canning section pretty cheap.mrs wages pickling lime. When I mix mine (all of my top off water is saturated in it) I try to let it sit for at least an hour. Never had any issues. You will see the water get really cloudy, then white stuff will precipitate to the bottom. Use it then.
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Posted By: badfinger
Date Posted: June 03 2012 at 3:10pm
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Not the white stuff at the bottom but the clear liquid, doesn't have to be crystal clear, just not white as milk
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Posted By: lskurys
Date Posted: June 03 2012 at 3:22pm
Headed to Walmart now. Thanks.
------------- 220g , large elite aquatics sump. 3 Radion Pro Gen 3 lights 3 Mp 40's
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Posted By: lskurys
Date Posted: June 04 2012 at 8:31am
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So I got my lime from walmart with out any problems. I mixed up a gallon of topoff water waited about 2 hours then slowly started adding the mix to the tank. It worked great the gallon bumped up my ph to 8.41. Over night my ph has dropped back down to 7.84.
Is this normal?
Is lime like Cal when your tank starts to use it just plan on using it all the time? I am would like to keep my ph more stable if I can.
Thanks for your help.
------------- 220g , large elite aquatics sump. 3 Radion Pro Gen 3 lights 3 Mp 40's
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Posted By: Fatman
Date Posted: June 04 2012 at 8:44am
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Yeah, that's pretty normal. The pH bump is temporary and the tank normally drops pH over night.
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Posted By: lskurys
Date Posted: June 04 2012 at 8:53am
ok with the ph drop what numbers should I try to keep my tank at? I have read that some people never watch there ph when they are checking there alk. Then I have also read that you want to try and keep your ph as close to 8.4 as you can. I am just trying to undersand what my goal should be with ph?
I just don't seem to understand ph. Most things we watch in out tank we have set rules for. os if X is low add Y. If Z shows up do a water change. lol
------------- 220g , large elite aquatics sump. 3 Radion Pro Gen 3 lights 3 Mp 40's
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Posted By: BobC63
Date Posted: June 04 2012 at 9:46am
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Do you run central air at your home?
------------- - My Current Tank: 50g Starfire Cube Reef
* Marine & Reef tanks since 1977 *
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Posted By: lskurys
Date Posted: June 04 2012 at 9:47am
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I do. May I ask why?
Now that I think about it that is about when I started seeing changes in the ph.
------------- 220g , large elite aquatics sump. 3 Radion Pro Gen 3 lights 3 Mp 40's
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Posted By: BobC63
Date Posted: June 04 2012 at 10:44am
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Bingo.
It is not the air conditioning itself that causes the pH drop, so don't worry.
It is the lack of new (fresh) air coming into the house, and the subsequent increase in carbon dioxide that gets trapped in the house due to all the windows and doors being closed (to keep the cool air inside). The higher CO2 value is causing the pH drop. Prior to a few days ago it was cool enough outside that you probably had the air off and a few windows open instead, right?
As far as your aquarium goes, if you run a skimmer, you can attach a length of airline tubing to the skimmers air intake line and then run it to a window or other source of outside air. That alone will mix in enough better - oxygenated air into your water to get the pH back to where it used to be.
In my case, I drilled a small hole in my floor and ran the extra tubing into my crawlspace and out to a foundation vent. My pH returned to 'normal' in about 4 hours, and hasn't moved since.
------------- - My Current Tank: 50g Starfire Cube Reef
* Marine & Reef tanks since 1977 *
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Posted By: lskurys
Date Posted: June 04 2012 at 11:06am
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Wow Bob I did not even think of the AC being the issue. I am running a G2 skimmer. Do you think that adding a 1/4 water line to the air tube. will be enough or should I go with a larger air line?
Thanks again for your help I was about to pull my hair out. trying to think of a way to keep the ph up with lime.
------------- 220g , large elite aquatics sump. 3 Radion Pro Gen 3 lights 3 Mp 40's
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Posted By: Mark Peterson
Date Posted: June 04 2012 at 11:21am
lskurys wrote:
ok with the ph drop what numbers should I try to keep my tank at? I have read that some people never watch there ph when they are checking there alk. Then I have also read that you want to try and keep your ph as close to 8.4 as you can. I am just trying to undersand what my goal should be with ph?
I just don't seem to understand ph. Most things we watch in out tank we have set rules for. os if X is low add Y. If Z shows up do a water change. lol | Warning - Adjusting pH by adding chemicals is a very, very dangerous thing. Kalkwasser is for helping maintain Alk and Ca with the side effect of temporarily raising pH, but it must be added very slowly by dripping otherwise it will raise pH very fast and possibly kill everything. Also, as you have discovered, the increase in pH with Kalkwasser is very short lived.
We should not consider pH as a goal, especially not a pH of 8.4. Just like all parameters, there is a reasonably safe range. For example: pH 8.0-8.3 (gas exchange, water turbulence and Alkalinity) Alk 8-14 dKH (add Alkalinity) Ca 350-500 ppm (add Calcium) Mg 1100-1400 ppm (add Mg) Ammonia <.5 ppm, Nitrite <20 ppm, Nitrate <30 ppm (immediately extend illumination photoperiod to grow algae, increase biofiltration for the long term)
pH will follow the Alkalinity so long as all other things are constant. In this case the ability to get more O2 and discard CO2 may have been compromised by the sealed house. (Staying for an extended time in a sealed house can compromise human health as well ) Gas exchange occurs at the water surface. The use of a skimmer increases the amount of water surface where gas exchange can occur so that's why Bob's suggestion is wonderful for a closed up house.

------------- Reefkeeping Tips, & quick, easy setup tricks: www.utahreefs.com/forum/forum_posts.asp?TID=9244 Pay it forward - become a paid WMAS member
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Posted By: lskurys
Date Posted: June 04 2012 at 11:37am
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Thanks Mark.
I now have the start of a plan. I just need an idea of how large of a pipe I should run for fresh air. I have some extra 1/4" tubing around the house that I could use. I also have some 3/4 pvc that I could pipe through an outside wall.
------------- 220g , large elite aquatics sump. 3 Radion Pro Gen 3 lights 3 Mp 40's
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Posted By: BobC63
Date Posted: June 04 2012 at 12:03pm
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I would use the next size up airline, and then you can just slip it over the end of the current airline...
BTW you can leave it installed like that year-round. Any outside air 'sucked in' during the winter months is not going to be so cold or such a high volume as to affect your water temperature.
------------- - My Current Tank: 50g Starfire Cube Reef
* Marine & Reef tanks since 1977 *
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Posted By: lskurys
Date Posted: June 04 2012 at 12:13pm
Thanks Bob
------------- 220g , large elite aquatics sump. 3 Radion Pro Gen 3 lights 3 Mp 40's
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Posted By: badfinger
Date Posted: June 04 2012 at 6:14pm
People say not to worry to much about ph, but for me that is my tale tale sign of when other things are off, and since my controller doesn't have a consistent alk/cal test (and i really dont like testing)I use my ph as telling me when something is off. If my ph is reading high, usually means my probe needs recalibrated(always have a low ph for some reason, why I use kalk in all my top off), if my ph is reading low I need more alk added.
What's funny about what bob says, is that this time of year my ph has been higher and more stable. But then again I don't open the windows or turn on fans in the winter, but over the summer I do.... but I think I am going to try that airhose to the outside thing, think that will help me keep it stable all year. So thanks bob for the idea
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Posted By: lskurys
Date Posted: June 04 2012 at 7:27pm
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I must say worked like a charm. I used a 1/2" tube and ran it out side. just popped a hole through the wall and. put calking around the hole. then feed the air hose from my skimmer right in to the pipe. With in an hour my ph went from 7.86 to 8.40 and holding so far. I have a G2 skimmer so it is a bit over sized for the tank. Seems like my fish are happier and some corals that were acting off are seeming happy again. Thanks again Bob!!! 
------------- 220g , large elite aquatics sump. 3 Radion Pro Gen 3 lights 3 Mp 40's
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Posted By: BillyC
Date Posted: June 04 2012 at 7:49pm
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Wow this is really interesting! FWIW I have only checked my tank's pH only ONCE EVER in my whole life. Besides that, if all other params were normal I forgot out pH but if sticking airline from my skimmer to the window keeps something more stable then count me in.
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Posted By: Akira
Date Posted: June 04 2012 at 8:05pm
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Not to Hi-Jack this thread but i constantly battle keeping my alk up . im at like 6.4 now and have been dosing kent a&b for like 6 days . Its the small bottles of premix . My mag is 1320 ca 390 ph 8.1-8.35 in the daily swing any idea ? or should I even worry ? I did a 10g water change last weekend and 5 g yesterday.,
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Posted By: DLindquist
Date Posted: June 04 2012 at 8:43pm
Akira wrote:
Not to Hi-Jack this thread but i constantly battle keeping my alk up . im at like 6.4 now and have been dosing kent a&b for like 6 days . Its the small bottles of premix . My mag is 1320 ca 390 ph 8.1-8.35 in the daily swing any idea ? or should I even worry ? I did a 10g water change last weekend and 5 g yesterday.,
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Yes Kurt, you should worry. Low Alk levels are extremely hard on SPS. Chronic low Alk levels can also led to your sand bed breaking down or dissolving. Think of a Calcium reactor. Target PH inside the chamber is 6.0-6.2. This allows the media to be broken down and in turn add Ca and Alk to the display. Raise your Alk up to 8.0 asap.
------------- A government strong enough to give you everything you want, is powerful enough to take everything you have.
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Posted By: Teknik777
Date Posted: June 04 2012 at 9:11pm
So where is a good spot to t in on the skimmer? Right off of where I have ozone? I would like to try this as well.
------------- 220 G SPS Display.
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Posted By: lskurys
Date Posted: June 04 2012 at 10:09pm
Yeah my elegance. Was closing up so I started with water change then moved on to testing everything I could. The only thing that was out of norm was the Ph. Then I tried the lime option and it did work to get the Ph up it only stayed up for a few hours. I am at closee to 4 hours with my Ph sitting right at 8.36 to 8.4 the best part is that my elegance has opened back up.
------------- 220g , large elite aquatics sump. 3 Radion Pro Gen 3 lights 3 Mp 40's
|
Posted By: DLindquist
Date Posted: June 05 2012 at 12:01am
lskurys wrote:
ok with the ph drop what numbers should I try to keep my tank at? I have read that some people never watch there ph when they are checking there alk. Then I have also read that you want to try and keep your ph as close to 8.4 as you can. I am just trying to undersand what my goal should be with ph?
I just don't seem to understand ph. Most things we watch in out tank we have set rules for. os if X is low add Y. If Z shows up do a water change. lol |
8.2 is the ideal PH.
------------- A government strong enough to give you everything you want, is powerful enough to take everything you have.
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Posted By: BobC63
Date Posted: June 05 2012 at 8:31am
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You can plumb in the outside air line directly into the ozone and then to the skimmer.
When I did mine, I drilled a small hole into the outside air line (just be careful not to drill through to the other side of the tubing, you only want to drill a single hole) that was the same diameter as the output tubing from my ozone generator.
Then I just stuck the ozone tubing into the hole and used a little superglue to hold it in place.
------------- - My Current Tank: 50g Starfire Cube Reef
* Marine & Reef tanks since 1977 *
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Posted By: Teknik777
Date Posted: June 05 2012 at 9:50am
Could u run small tubing ozone or ro tubing and t it in with the skimmer? Would that work?
------------- 220 G SPS Display.
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Posted By: BobC63
Date Posted: June 05 2012 at 10:10am
Here are a couple of options (excuse my crappy drawing skills ):
This option use a plastic "tee" to put everything together -
This one just drill a hole into the outside air tubing for the ozone air output and then slip the outside tubing right over the existing skimmer intake airline (this is how I did it) -
Just make sure your connections are fairly tight so no ozone escapes into the ambient room air (ozone is bad for you)
------------- - My Current Tank: 50g Starfire Cube Reef
* Marine & Reef tanks since 1977 *
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Posted By: BobC63
Date Posted: June 05 2012 at 10:49am
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Hey, just a couple of other suggestions...
- Take a small piece of window screen and a rubber band and cover the exposed end of the airline tubing that is outside... keeps dirt and bugs out of the airline.
- As Mark pointed out earlier, the higher CO2 that builds up in your home is not good for people, either... we are lucky here in UT that even if it is super hot (90+ degrees) out during the day. it cools off quite a bit at night. Be sure to open a few windows before you go to bed (say around 10 PM) every couple of days to allow fresh air into your home. You can keep even the A/C on, since the outside air at 10 PM is probably the same temp (or even lower) than your inside temp - so you won't make your A/C work any harder than if the windows were kept closed.
------------- - My Current Tank: 50g Starfire Cube Reef
* Marine & Reef tanks since 1977 *
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