Brand New 8 gallon bio cube

Ok, seriously, I'm considering an under gravel filter. Any old school reefers ever use them in a reef tank? I know Paul B does.
I used them several times on freshwater tanks, but always with a large substrate, like gravel. Never had to clean them. Not sure about sand, but something like crushed coral might work better.
 
I used them several times on freshwater tanks, but always with a large substrate, like gravel. Never had to clean them. Not sure about sand, but something like crushed coral might work better.
That's me. I was wondering if that would be an issue.
 
MVIMG_20190816_073501253.jpg
I love this pic ! thank you for sharing. :D
 
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Ok, seriously, I'm considering an under gravel filter. Any old school reefers ever use them in a reef tank? I know Paul B does.
I would say no. PaulB uses a reverse flow undergravel filter. You would need course substrate. Remember, these were popular in the fish only days. I would say bare bottom (in the tank :-) ) or a shallow sand bottom.
 
I would say no. PaulB uses a reverse flow undergravel filter. You would need course substrate. Remember, these were popular in the fish only days. I would say bare bottom (in the tank :-) ) or a shallow sand bottom.
Well crap. There goes my outfit!
 
Hi fins are EXTREMELY territorial of their cave entrance. They will fend it off from much larger fish.

I had a tank with an under gravel filter fed by an air pump syphon kind of thing. The filter floss and carbon went in a chamber at the bottom and there was a tall stand pipe that the air would rise in, creating an up flow of water that would pull thru the gravel and up thru the pipe.

Seemed useless to me, on a freshwater I'd rather have a power filter or a canister. Salt, sump... all the way sump.
 

IF YOU HAD TO TAKE A REEFING EXAM, WOULD YOU PASS?

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