Any opinions on what def this could be?

[Lil Dab]

After feeding this morning and reading my run off ppms I agree. I'm gonna flush with plain ph'd water before I add anything new and try to get these ladies in check.

Don't flush coco with plain water adjust nutes and flush with 60% strength

 

[Jim_H]

Never flush with plain water. It'll strip all the calcium out of your coco. If your starting water is 100ppm you should need very little calmag. I'd drop the calmag to 1ml/gal and keep running the same a+b, and flush with that

Did as you said, flushed about 5 gallon through them until my ppm was where its suppose to be and dropped the calmag down a bit. I will make sure to be persistent on checking runoff ppm for now until things start looking better.

 

[JP1]

Did as you said, flushed about 5 gallon through them until my ppm was where its suppose to be and dropped the calmag down a bit. I will make sure to be persistent on checking runoff ppm for now until things start looking better.

5 gallons isn't close to enough to really flush 3gal of coco. But as long as you're getting plenty of runoff, it'll be flushed in a couple days. Check your runoff ph?

 

[JP1]

I'm looking to switch from the canna a and b

I'm looking at changing nute lines myself

I haven't used the canna line but I've been happy with the floraflex nutes, hydroguard, and microbes with the full tilt, low strength schedule

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[Jim_H]

5 gallons isn't close to enough to really flush 3gal of coco. But as long as you're getting plenty of runoff, it'll be flushed in a couple days. Check your runoff ph?

Yep, that's the only reason I quit flushing. The runoff ppms were the same as what I was flushing with.