Starting up frag tank

[ugluk]

Ok, got my tank, stand and light. Now I just need to set up my frag tank. I have a couple of questions on how to go about this. First I am wondering how much flow I need for the tank. Its a 20 long and I will be keeping mostly zoas. I have a Koralia 3 (1050 gph) that I was planning on putting on, I just wanted to check that this is not to much (or to little) flow for the 20. Can I use the water from my DT to start up and do water changes for my frag tank or should I use new water? Do I need to cycle the frag tank? Also I had some pebbles from an old freshwater tank that I was going to put a layer of on the bottom. Will this be the same as using live rock? I figure it is just a place for bacteria to collect so it doesnt really matter, am I correct?

[bnumair]

for a 20 gal tank and for softies u dont need that much flow about 500gph turnover is plenty. frag tank needs to be cycled unless u use filters /rocks from the established tank. just water alone will not cut it. using sand and rock from ur established tank will bring the bacteria needed.

[ugluk]

Thanks, I have some live rock from my DT that I can put in. Is that all I need to put in or should I use the old shrimp trick to cycle?

[ugluk]

anyone?

[110galreef]

piece of LR from other tank is plenty....
also the 1050 will work on the 20. more than needed but since you have it go with it

[ugluk]

Actually I have a koralia 2 which is 600 gph so it should be perfect.