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Originally Posted by Bartman
Hi All,
For my 75G I was thinking of going with about 25 lbs of base rock and 50 lbs of live rock. What should I use for the base rock? J&L has Reef Rock for a little over $1/lb but it is dense and doesn't appear very porous. Big Al's has Tufa which is light and porous but they want $2.79/lb which is reasonably close to live rock prices. Is there, perhaps, another alternative.
I've seen some DIY rock which gives good shapes but is also fairly dense and solid.
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The base rock that J&L sells is actually quite porous. I bought a box of it when I set up my reef tank to use as a base for the 140 lbs of LR. The thing that disapointed me with the base rock was that it was all small, fist sized pieces.
I tried some tufa rock in my FOWLR and aslo found it to be a slime algae haven. I think it was due to phosphates trapped in the rock though. It went away after a lot of diligent siphoning and water changes. Took me about six months to get rid of it. Its still in the tank and seems fine now.
If I was doing it again, I'd stay away from those options and just pay the price for good LR.