Hi Plant....actually no CalMag at all......Just the grow nutes and whatever supplements you want.

It's probably easier from your end to look at the total number of ppms for a certain week and reduce that number by one third.....then quietly add your 130 of tap water.

For instance......week 2 of veg....my total number of ppms are about 200 (using CalMag). In your case you want your number to be about 2/3 of that BEFORE YOU ADD the 130 ppms from your tap water. So you would want about 125- 140-ish ppms of Pro Grow and then add 130pp of your tap water on top of that. Your total ending number would be HIGHER than mine....yours would be 250- 270.

See with tap water you get to toss all that chatter about magnesium and calcium out the window......UNLESS you start having a problem later. For now you should just worry about using the nutes etc at 2/3 of the total....minus your tap water ppms. It would pay to start low and add things slowly as I mentioned before....easy to burn especially when they are young.

You will also want to make sure that your tap water will hold a stable ph....that was the problem I had with my well water that made me turn to RO water. I could not get the ph to stay in the desired range for long no matter what and immediately stopped having the problem after switching to RO water. :thumbsup:
Weedhound Reviewed by Weedhound on . WeedHound's Nute Schedule for Hydro/Botanicare By request....I'm not very good at detailiing things analytically so I'll just babble it out. My nute supplies consist of Botanicare Brand: Cal Mag Plus Pro Grow Pro Bloom Hydroplex Rating: 5