Anyone with direct experience removing a sand bed wanna talk about it?
I've never done bare bottom. Thought about it, early on, with this tank, but just couldn't do it. Now... nearly 3 years in, I'm having the same sorts of trouble I've had in the past with maturing tanks. PO4 rising slowly, NO3 no longer unmeasureable, getting cyano spots, corals starting to be a bit less open...
I ordered a marine pure block the other day. Once that's here, and been in place for a week or so, I'm going to start siphoning out my sand. I figure a weekly 15% water change, removing perhaps a quarter of the sand bed each time, until it's gone.
Then, I'm going to add a couple Rossmont Mover 3k pumps, blowing right across the bottom.
Might even be considering adding some sort of mechanical filter... floss, socks, rollermat... My problem with these type of filters is me. I know me... and I don't belive that I will change them out often enough. In my experience, born out by
BRS's testing, more than once a week is required to see any real benifit... and I'm just NOT going to do that. So... Rollermat, or one of it's offspring... Then, the problem becomes... how to I set that up?
My sump is a standard 55g tank. Inlets into it are short, tank is right up against the wall, no way to hang anything there... ref section of the sump is something like 18" deep (standard 55 is 21", ref is nearly full height). Just not sure how I could mount something like a rollermat. Suppose I could just add a pump, instead of trying to feed it from my overflow...