ozone

I'm hooking up my 50 mg ozone unit today on my frag tanks (90 gal) it will be controlled by a neptune. What setting should I start out with? and how often should I turn it up?

for ozone you want about 5-10 mg/hr for every 10 gal. on a 200 gal tank you would run about 75-80 mg/hr with a orp of 250. I hope this can help you. 

jeff ... I started my tank out pretty slow and just ramped it up over a couple of weeks. I run an ORP of 300 now, but started pretty low at around 150. I have a red sea 50mg unit and its set to 50% and runs off my controller. 

Just remember to keep your ORP probe clean! You would be amazed at how quickly the build up of organics on the probe will skew the reading.

I have to clean mine weekly.

Brad why 365? I thought 300 was where it needs to be.

Jeff,  this was posted by Corey in an earlier post.

Coreyk wrote,

Thought anyone following this thread might find this useful. Pulled it off a thread on RC.

Very little will be alive : below 100 millivolt
Very Bad : below 140 millivolt
Bad : 140 to 180 millivolt
Poor : 180 to 200 millivolt
Too Low : 200 to 220 millivolt
New salt water : 220 to 240 millivolt
Low : 220 to 270 millivolt
Medium : 270 to 310 millivolt
Good : 310 to 340 millivolt
Better : 340 to 360 millivolt
Best : 360 to 390 millivolt
High : 390 to 450 millivolt
Too high : over 450 millivolt
Dangerous : over 525 millivolt
Very dangerous : over 575 millivolt

Wow that is fast! You can soak your probe in vinegar for 10 - 15 mins.

Jeff, This is what I use to clean my probe every week.  It is from Drs. Foster & Smith.

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Electrode Cleaner (3.38 fl. oz.)

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Sorry Jeff, Didnt see your post. I use heinz white distilled vinegar. Which I now mix 50/50 w/ RO.