Here's the concept behind LIVE. for example, Aquacultured LR
means there are these rocks that are placed in platforms by the beach. They then are kept there for a period of time. They start to acquire bacteria and even hitchhikers. So now, they are called Live.
With sand, all you really need to do is get regular sand (not live). SEED it with LR
. Eventually, your sand will become Live. that's it. You don't need 50 percent this and 50 percent that or what not. Just get the sand, put Live rock in there, and eventually they will become live. Mostly live with bacteria. at best, maybe some wiggling things or even macroorganisms.
I have a 55G with 400GPH flow rate on my PH
. The most concern that you should have when it comes to PH
's, sumps, and other filtration/circulation systems is the turnover rate. Which means, how many times will the total volume of water in my tank recirculate in 1 hour. In my case, considering the PH
and the HOBS, something like 9 times per hour. That's what I prefer.
Good luck on your project