OrionGirl said:You're not making any sense--live rock isn't the only option for biological filtration in a saltwater setup, nor is a cleanup crew required. And heck, a pleco is a ridiculous cleaner in a FW setup--size and adult food preferences alone disqualify them from most tanks. RO water is needed in some cases for either, but not mandatory for SW.
This is silly.
Not making any sense huh? You need to have the bacteria in saltwater tanks and that comes from live rock. Whats your alternative for ro water? Tap. God I hope not cause the amount of metals that will build up over time is outrageous.
OG, I hope you havnt been giving this out as advice.