W/C's and drop in SG

[Aquattro]

Originally Posted by bv_reefer

ya i've been looking into a used refractometer but honestly i don't think that SG has to be super accurate for coral health as long as it's consistent

Well, it has to be consistently accurate. Now adding straight RO to your tank kinda drifts away from this theory, dontcha think?

[michika]

It sounds like you need to pick a set point of specific gravity for your tank, and then read up on how best to maintain it. I'm not sure if your confused between topping off, and water changes, or if you just don't understand them out right.

Watch this ---> http://www.youtube.com/watch?v=kSTY346rros

In short, if your confused please ask. Many of us here are more the willing to help you out and get you pointed in the right direction.