the cardboard could break up if you left it in there for too long...i ran mine over a piece of plastic, as that doesn't disintegrate at all and it did the trick as well... 80# of live rock seems very light to me... i would def say you need quite a bit more.
I can sympathize with the tank being monstrous, my 210 was over 350#. It sounds like you got a steal. Congrats. You're not going to want to keep the fx5 hooked up to it. It's a quality pump... but you need the fuge and a quality skimmer..that's the only way...
I can sympathize with the tank being monstrous, my 210 was over 350#. It sounds like you got a steal. Congrats. You're not going to want to keep the fx5 hooked up to it. It's a quality pump... but you need the fuge and a quality skimmer..that's the only way...