Not looking too good

I'm growing two mother plants same strain, one on the right is doing pretty well, the one on the left judging by the leaves looks like it's not doing so well. I am using dwc with floraduo part a and part b general hydroponics. I am only using 1/2 strength. I want to grow these as fast as possible so I have plenty of cuttings for clones by the time my batch is done flowering. Any help please about wants going on with the plant on the left and any tips to speed up the grow time. Thank you

I’d start by checking your ph. give more info, what lights, ph, nute ec, temps, rh….

Hook Daddy said:

I’d start by checking your ph. give more info, what lights, ph, nute ec, temps, rh….

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Rh is a little low in the mid 40's (it's in the furnace room) just using (4)t5 for lighting, ph has been steady at 6.2. Temps in tent are averaging 70. Ppm is at 550...using ro water

Drop pH to 6 and feed the burnt one less rich nutrient solution. That's nutrient burn I just went through it with an undocumented Jacks Nutrients experiment. Also some genetics are sensitive to too much or too little nutrients, usually it's too much though.

It is very hard to tell from the pics what's going on. Definitely lower pH to 5.8 for DWC Hydroponics.

Also I can't tell if those dots are damage from mites or another pest and the plant on the right may have a spot of PM starting.

I would remove those damaged leaves and spray the plants down with some clean water, give them a good rinse. Get your pH stable at 5.8, up ppms to 700 and they will start to grow fast. Keep an eye out for pests and PM.

Let us know how she does!

How much cal mag should I be using?. I only ask because I'm using ro water

calvin.m16 said:

Drop pH to 6 and feed the burnt one less rich nutrient solution. That's nutrient burn I just went through it with an undocumented Jacks Nutrients experiment. Also some genetics are sensitive to too much or too little nutrients, usually it's too much though.

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Burn from 550ppm? Definitely not that

Nice-guy-eddy said:

How much cal mag should I be using?. I only ask because I'm using ro water

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About 200-250 ppm

With RO water I bring it up to 200-250ppm with cal/mag first. Then add other nutrients. If just mixing a gallon 5ml is a good start.