I use city water, let it stand overnight in my bucket before mixing. All ratios here assume 1gallon of water.
Seedling strength / Pre-charge:
1ml Micro, 1ml Bloom, 1ml Grow
Veg (first five bladed leaves appear):
2ml Micro, 1ml Bloom, 3ml Grow
Transition (one week, when flowering stretch ends):
2ml of each
Bloom:
2ml Micro, 3ml Bloom, 1ml Grow
Finish (14-21 days before chop):
Bloom recipe, cut in half.
Flush (final week):
pH adjusted water-only
That's my base program for all plants. I fertigate right at lights on, then 3 more times spaced out throughout the light-day, usually every 3-4 hours.
If the plants look overfed, I mix up my batch then add in 1/2 gallon water to dilute, then pH adjust. If they look underfed, I fertigate at the same strength, but add a feeding or two. I try to never put more than 6ml of fertilizer per gallon in my mix, that seems to be the sweet spot for my environment.
If I had better RH control, I could push harder, but it's pretty arid where I am and so I keep my feeds mild and frequent.
I don't own a digital meter, I just use the GH drops and have my color targets memorized. Little Ca def? More orange. Mg def? More towards the green side of the spectrum.
I have also been adding epsom salt at 1g per gallon, but I think I'm going to stop doing that because I'm see some signs that my current plants don't need it, but that's really strain dependent.
CalMag products don't make sense to me since Calcium, Nitrogen, and Magnesium are antagonist to each other in coco. Flora series + tap water has all the calcium you need, so all you should really need on hand is a bit of Mg.
