Looks like a Potassium deficiency. Second opinion?

So I’ve got 4 plants, I’ve had them for 8 days now and got them as clones. They are in a recirculating drip system using GH flora series and Calmag at half amounts, and I am using Alliance Biologics beneficial bacteria mix (got 1 grows worth sample for free at a local grow shop). Ph is kept between 5.5 and 6, although for the first 3 days I used tap water in the reservoir and I have hard ass water so the ph kept rising to 7. But I’m using R/O water now and that is taken care of. But the plants look either nutrient burnt or like there is a potassium deficiency. I just don’t understand how it could be a potassium def. if I’m using the correct ratio of nutes just at half amounts. Unless I should up the nutes? But that sounds like a recipe for nutrient burn. Help me out?

It looks like you need to ease up with the nutrient, what ec are you using?

Because you switched to ro water. Now you need to add even more calmag. My 02 anyway. And as said maybe a little high on EC

Rig your airlines a little better so light doesn’t touch them. Holes in the sides. Duct tape etc.