Calcium deficient or nute burn?

Ralphienz

Member
i have a melon gum and a white widow cross big bud , Scroged in living soil mix. Under led.

Soil + peat moss + perlite, doki mate lime, worm casting, seaweed etc etc

Have been using a full range of flairform nutrients to the label specs.

I ph my water give or take around 5.5. With a flair form colour test kit.

Plants are current 4.5 weeks into flower with around 3.5-4.5weeks to go.

Looking in to the tent the direct the pics re taken melon on the left widow on the right. Melon seems to be starting to yellow slightly I’m not to concerned about this as I figure it’s starts to wrap up.

The thing that is worrying me is the widow mostly but now the melon are showing since of some sort of deficiency, you see in the pics the tips and the serrations are starting to yellow, it looks worse with my led light on.

Could anyone tell me is this nutrient burn or is it possibly a calcium deficiency? I though 5.5-6 was right but it looks like calicium is only taken up above 6. Last night I gave a good water with straight tap water ph around 7. Not sure what to do next but wait and see, was thinking for their next water in a couple. Days I might just do the same. 7.0 from the tap.

Any help much appricated!!
 
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