Easy tank black-out

Gahngoo

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I don't know if anybody has ever done this to black-out their tank for algae control or whatever but…

I used to try to cover my tank with towels or put cardboard over the glass. Both ways are a pain & don't work that well. I've found the easiest way is to use aluminum foil. Zero light passes through it & it conforms to all bends around the tank. Just tape the ends. It's easy to do. My DIY tip.
 

TheOne

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I may just try this as I've been scrubbing my rocks with a toothbrush trying to get rid of some algae. Do you still feed your fish daily? How long do you do the blackout?
 
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Gahngoo

Gahngoo

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I may just try this as I've been scrubbing my rocks with a toothbrush trying to get rid of some algae. Do you still feed your fish daily? How long do you do the blackout?
I do a 3-4 day blackout to control dinoflagellates "dinos" if I get an outbreak. I don't feed anything at that time. Fish/corals can go weeks without eating if necessary, so a couple days w/o food is no problem.
 

Bbfishb81

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If you have coral, it's safe to do black out for no more then 72 hours. After that, its risky to go longer. Without coral, should be good for 4-5 days, and not feeding the tank would definitely help.
 

TheOne

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I just did a 3 day blackout on my tank. I just covered the tank with contractor bags since I had some already and covered the top also but left a couple foot open and just covered with a towel to help let in oxygen. I'm pretty sure the return pump is sending back plenty of oxygen anyway.

Tank definitely looked better after. Still scrubbing with a toothbrush a couple of times a week to get the last of it. The algae I have looks like cotton candy or cotton. Not really sure what it is.
 

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