Doomboy15 Well-Known Member Jan 21, 2021 #1 My ppms for my tap water is around 120...should I add or subtract this number to get my desired ppms for feeding? Say I'm looking to get 400. Am I really at 280 or should I mix until I get 520?
My ppms for my tap water is around 120...should I add or subtract this number to get my desired ppms for feeding? Say I'm looking to get 400. Am I really at 280 or should I mix until I get 520?
myke Well-Known Member Jan 21, 2021 #2 520, normally tap water that low doesn't really have anything the plants can use.
Creature1969 Well-Known Member Jan 21, 2021 #3 Tap PPM counts toward your total so you would add the 280 to your 120 to get 400.
myke Well-Known Member Jan 21, 2021 #4 Lol,somewhere in the middle ha.After growing with the same water for awhile you'll get a feel for it.
Lol,somewhere in the middle ha.After growing with the same water for awhile you'll get a feel for it.
