how much calmag plus should I add?

[stoned88911]

I dont knw about burning the plants.

But, id use the amount the bottle says.

stoned88911 Reviewed by stoned88911 on 11-01-2008. how much calmag plus should I add? I'm using bottled spring water which has a ppm of 50 before I add anything to it. The calmag instructions say to add 1tsp/gallon but I've read on some boards that I should keep adding calmag until my ppm reaches 250-300. Is that correct or do I risk burning my plants? Rating: 5