The Planted Tank Forum - View Single Post - Building a sump?
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post #29 of (permalink) Old 04-05-2013, 03:51 PM
Sluggo
Planted Member
 
Join Date: Nov 2010
Location: Portland, Me.
Posts: 255
Quote:
Originally Posted by dasob85 View Post
I think I saw a thread where someone did the reverse light cycle but everyone was wondering why lol.
pH drops during the main tank's "night" cycle, when the lights are off. Having the sump lit during those hours prevents that. You can use something as simple as a clamp light with a spiral CFL.
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