Dwc leaves deficiency?

Basics:
Super lemon haze
1x600W Hps
4 x 25L buckets
Room temp 25C - 28.5C
Using VITALINK A&B & SILVER BULLET
EC 0.8-1.0 (water is 0.4EC "HARDWATER")

AM I UNDER FEEDING THEM??

3rd/4th week of veg had NO ISSUES AT ALL until now, its only happening on 2 of the plants so far

Need more info.

Definitely a low EC and why are you using hard water in DWC? That's a fool's errand.

https://www.alchimiaweb.com/blogen/deficiency-excess-calcium-in-cannabis-plants/

Assuming your hard water has a high amount of calcium and likely iron. Read up on calcium excess.

hotrodharley said:

Definitely a low EC and why are you using hard water in DWC? That's a fool's errand.

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Its not by choice mate lol I'd use soft if i could

hotrodharley said:

https://www.alchimiaweb.com/blogen/deficiency-excess-calcium-in-cannabis-plants/

Assuming your hard water has a high amount of calcium and likely iron. Read up on calcium excess.

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If it does have calcium excess, what would be the best way to lower it?

Tbh it looks more like deficiency then excess, i've topped up the nutes to raise the EC to see how she reacts.

polishpollack said:

Need more info.

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Such as?

Bushbaby11 said:

If it does have calcium excess, what would be the best way to lower it?

Tbh it looks more like deficiency then excess, i've topped up the nutes to raise the EC to see how she reacts.

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Calcium excess is a major cause of lockout in a lot of cases.

hotrodharley said:

Calcium excess is a major cause of lockout in a lot of cases.

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So how do i sort it?

Bushbaby11 said:

So how do i sort it?

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RO is always suggested by growers. Always for multiple reasons. Distilled water is perfect. Inert. Mineral free. Any bottled water beats what you are using. I believe most growers would agree. RO system is expensive.

hotrodharley said:

RO is always suggested by growers. Always for multiple reasons. Distilled water is perfect. Inert. Mineral free. Any bottled water beats what you are using. I believe most growers would agree. RO system is expensive.

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Lol exactly, expensive and right now not affordable