I’m not really sure what’s up here. Temps are 68-74. Nutes are regulated , water 1L every morning with tea because they’re dry. 600w mars hydro about 20” above canopy. Why are my leaves doing this on only a couple of the plants?
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Looks like a calcium deficiency. Are
You monitoring input PH/PPMs as well as the run off of these 2 
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Ok say the ph going in is 6.8 on the money every time, I don’t have a ppm meter , but I do get a little runoff at a time and if I let the water dry I can see the water spots on the tent floor. I assume that’s from the tap water which I’m cool with. I use flower fuel, and complete crop. These are very strong nutes already complete crop is 9-5-15 at 7.5g/gal and flower fuel is 1-34-32. So my Pom’s are probably through the roof but the plants have never had an issue with it and the buds have grown exponentially using it. I have Sensi mag cal mag. Should I introduce that to these two daily? Or all of them?
You have to flush because of salt build up. A little bit won’t cut it. And you will
Also need to know the ph/ppm both are important when using synthetics.
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What do you mean a little bit won’t cut it? You saying I should take em outside and flush them heavily with some rain water or something?
Sorry it’s my first grow I appreciate the constructive criticism
You said you get a little bit of runoff. It’s obviously not enough you need to measure ppm. Without knowing the ppm you are only going to fight yourself.
Only having a ph meter isn’t enough.
Salt will build up in the roots and stop the plant from eating. If not flushed it will cause problems as you see.
I read a lot. I’ve never done nor will I do synthetic. They always ask for ph/ppm numbers because that’s how you regulate you nutrients.
Sorry if I seemed harsh I didn’t mean too 
. I was just saying a little isn’t good. I’m not sure how much to let out but I would think atleast a cup or more to test runoff.
