Quote Originally Posted by MisterE
Good stuff, latewood.

So when I get my supplement I plan to do a res change. It's about due, so decent timing. Is it true that what I should do then is add my water, my cal mag+, the recommended amount of the supplement, and then my GH 3 part until I hit my desired PPM?

How about during top offs? I am adding nearly 2 gallons per day now on a regular basis. Any preferred top up method? IE: ro water only, ro + calmag only, full nute top up? I've seen several methods posted around the boards from respectable people (based on their grow logs and post quality).

Thanks for any additional input from everyone.
just use ro water or add a little calmag 3ml per gallon, but If I do this I don't always add calmag to my nutrients...It is a preference once you learn to grow.