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My friend is giving me some old sand. He took it out of his tank a few months ago, and left it in a bucket completely dry. It used to be southdown mixed with some live sand at the time. Should I use this sand? If so, how do I clean it?

Okay, I thought I was getting most of the information down, but now I have been reading posts that refer to the calcium and alkaline levels. I'm planning on keeping a reef system only, no fish 30gal. What are the calcium levels supposed to be? Do I need to do any supplementary additions of...

I'm trying to get some southdown (I live in LA) and was trying to approximate how much to get. How many lbs would you need for a 4" DSB in a 24x13 tank?

I haven't done anything yet but this is my plan and my outline. What do you guys think? Aquarium Setup 20 Gallon (24x13x16) 2x65w Powercompact 2-Hagen 402 powerhead’s at each corner Pre-setup – Curing live rock Notes: Water is ~ 78-80F, Lights on for 3-4 hrs day during cycle period (1 month)...

I have a 20gallon that I'm going to convert. I've been looking at my lighting options. I will eventually want to move to a reef system. I was thinking of getting the Custom Sea Life Moon-Lite 24", 2x65W. Is that too much light? Should I go for the Custom Sea Life Moon-Lite , 2x40W? BTW...

Hello, I am very new to this hobby. I currently have a 20gallon freshwater that I want to convert. I'm thinking of keeping fish initially but eventually will want to make it into fish and corals. My question concerns my lighting. I have a lighting apparatus that currently holds one 18"...