Converting FW to SW

[Myka]

Originally Posted by Palmer

I am guessing a 120 g long would take 3 bags. I wasn't planning on doing any more water changes than I normally do which is a lot. The idea was to just let it cycle and then utilize a cleanup crew. But maybe I shouldn't try this experiment.

Oops, sorry for some reason I thought this was a 41-gallon tank. I must have been reading some other thread. Hence my reference to my 50-gallon tank.

You could try it, if all else fails you siphon the sand out and try again. If you fill the tank halfway with FW, let it circulate for a couple days, then test ammonia, nitrate, and phosphate that will give you an idea where you stand.