So I should just start buying the RO water by the gallon, and then adding the calmag to it, test the ppm and then add the nutes and test again. Also other than buying a regulator/tank is there any other way to add c02 to the water that is not so hard on the wallet. Money is running kind of low so I am trying to make do with what I have until I can upgrade. Now the PH seems to have stabalized, I havent had to add anything the past two days and my ph seems to stay at about 5.5. Ladies are finally starting to look good again . Thanks for all the info