Salt build up/ flushing

[Kstewart]

I’m in the last 3-4 weeks of flowering & have a couple of plants that look like there’s a salt build up & they are struggling to get nutrients or hydrated. The leaves are going yellow & are really dry to the point they are crispy. I use auto pots so I’m not sure how you flush the hydro coco to get the salt build up away.

It’s mostly only 1 plant of 8 that’s affected.
Hid light 12 inches above. Temp is usually 26-29 but lately I’ve had a couple of 32 days.
Air movement is ok.

Am I correct in saying you ph the tank water to 6 & flush all plants for 2-3 days & the pot flushes From the bottom up?




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[M_C]

Whilst I grow in coco, rather than hydro, the principle is the same

You don't want to PH the water at all, if it is 'out of range' for particular nutrients, then all the better

That said, I never bother flushing these days... it's hard to spot the difference in the finished product (IMHO)

[Kstewart]

I ph’d the water already to 6.0 I checked the water in the valves & you can see a build up of like bubbly goo/nutrients. I know this will happen with all the different feed going in but the ph was 6.6 in the pots. After 1 day of water the valve area is now 6 so I’m hoping the flushing is doing something lol lesson learned for my next one t flush as I go into flowering. Thanks


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[Kstewart]

This is what I found in the pots at around 6.6-6.8ph


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