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Not a coco grower but know enough that RO water requires cal mag for damned sure. Cut back on the Grow from your GH trio if you have signs of nitrogen toxicity before stopping the Calimagic. Raised leaf edges say heat stress rather than too much light considering your light. Have you measured...

I heard that if you take a dump in the container after some beer and hard boiled eggs it really helps.

Paper towels are ridiculous and totally unnecessary. We try to emulate nature. It’s hard to improve on a plant that’s survived and thrived for millennia without any help from man. Clean tweezers? Distilled water? Puhleeze.

Bad advice

It’s generally not heat but light intensity with LED. It’s best to check levels with a PAR meter but guys on here go through a routine using cell phones and apps and then convert from lux to PAR.

I used tons of the turquoise crystals back in the day. Mix half strength and it doesn’t burn. Then I’d use dahlia food for flower. But the GH original trio is top shelf compared to the turquoise soup.

There’s many many better options now. Especially for flowering.

There’s so little ammonia in that product that any reaction probably is immeasurable. Don’t sweat it.

Are you using bleach (sodium hypochlorite) or ammonia? 2 very different things.

Potassium or phosphorus excess can cause this spotting. I’m not a fan of flushing but I think that’s probably your first step here. Have you used these nutrients before to produce good bud?

Sodium hypochlorite and chloride aren’t going to interact to form chlorine or especially chlorine gas.

Fed every 3 days suggests possibly overfeeding. What strength were you feeding at and exactly what were you feeding? Entire plant looks rough.

Composting is the key to reusing soils whether it’s peat you poured nutes on or used super soil. You can slurry test it but without actual analysis you won’t know what is contributing to the EC.

Buy yourself a good EC meter and answer your questions easily. If you don’t have one do as @Rurumo suggests. Start low.

This spring is in the middle of nowhere. EC is .4 so probably the same calcium, magnesium and high manganese found in the municipal supply. It’s totally usable for everything. Just posted this so people think to check EC and pH instead of thinking it’s somehow “pure”. Definitely not RO.

I’m assuming Royal Queen since his first comment includes that.

A natural spring near Fairbanks yields water with a higher EC than the municipal water there does.

How much water are you using? It should take at least a full liter in a 1 gallon container.

Consider topping lower and then rooting the section you removed. You’re going to have to consider stretch and a 6’ tall tent doesn’t have a lot of headspace after hanging your light. And only remove what is under the canopy after you flip. Lollipopping is what some call it. Remove all the...

Stop removing leaves and top now or forget it if you are preparing to flip.