NEW WITH MH
Printed From: Utah Reefs
Category: Specialized Discussion
Forum Name: Equipment
Forum Description: This is the place to ask question about reef equipment.
URL: http://www.utahreefs.com/forum/forum_posts.asp?TID=36212
Printed Date: May 14 2025 at 3:44pm
Software Version: Web Wiz Forums 12.03 - http://www.webwizforums.com
Topic: NEW WITH MH
Posted By: oskrcg
Subject: NEW WITH MH
Date Posted: November 04 2009 at 12:12am
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Hi, I had power compact on my 55g tank, but i got 2 x 175w 15000K MH, I just want to know how long they should be on per day? ------------- I'm new in salt water aquariums |
Replies:
Posted By: Mike Savage
Date Posted: November 04 2009 at 6:43am
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Most corals need about 8 hours a day. Most people like to run the lights 8-12 hours for more growth and longer viewing.
Mike -------------  |
Posted By: chk4tix
Date Posted: November 04 2009 at 6:56am
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If you just got the mh's, I would recommend starting out with 2-4 hours a day and slowly work the time up to the full time you want the lights on. This will help insure you dont shock the corals with light and bleach or kill them. ------------- Original Crappy Reef Club Member #2 |
Posted By: Mark Peterson
Date Posted: November 04 2009 at 8:13am
Definitely  two weeks of acclimation to new brighter lights.------------- 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: Crzyfshguy
Date Posted: November 04 2009 at 2:17pm
hell just leave them on 24 hours a day, stuff should grow AWESOME!  I run my MH 3-4 hours a day and my corals are still slowly growing, If you can afford to run them 12 hours, I am sure your corals would love you for it. I run a 24W T-5 for 8 hours or so though. ------------- 45G w/ leds 15G sump MP10es |
Posted By: AvesSaltGuy
Date Posted: November 04 2009 at 2:28pm
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lol @ Crazy - no sleep for corals or fish! :) ------------- Michael - 120G Reef Acans, Pom Poms, Zoas... Clowns, a firefish, and a coral beauty -purple tang, sailfin desjardinii, Filtration - sump, protein skimmer, UV sterilizer, 2 Koralias, refugium. |