lps receeding

bang guy

Moderator
Originally Posted by renogaw
http:///forum/post/2627237
this is a good trick... what should i be looking for? i know the color of my water change water is more greenish than anything.
The paper should still look white when looking through the length of your aquarium.
If it looks yellowish or greenish then your GAC isn't working. I only use GAC when the color of the water isn't clear. I place it after the overflow so that water is forced through it. I run it 48 hours and then I throw it away.
 

renogaw

Active Member
hmm, only 48 hrs... i'll have to do this.
i put it in a bag in the final bubble trap of my fuge so it 50% of my water gets the carbon, 50% gets the phosphate remover
 
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