what to do with used tank?

I'm gonna put in all the tap water from the 55g(after conditioner,buffer,and salt). the rest - old saltwater from the 150g. i'm decideing if i'm going to keep the ehime cannister filter, buy new one, sump, or nothing. how much live rock do i need for it to be my filter? should i use the cannister until i have enough? thanks
mike
 
LiveRock27;173576 said:
I would stay away from using tap water at all.[/quote]


Ive seen this 100 times.

All might go fine with the tap water and then again it might not. If you are going to invest the money and the time for a reef tank RO water is the only way to go. Tap water is risky. It has silicates in it and Silicates feed Diatoms and other unwanted pest algaes.

Good luck!:up:
 
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