Tips of leave curling up and turning yellow.

One of the White Rhino is going better, but the tips are still curling up on the tips. I did a flush and water/nutrient change today.
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Total 4 plants in flower area.
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Are the tips curling up on all the leaves or just the larger ones? My first guess would be to move the light away or cool it down.

looks kind of like heat stress, move the lights away or get better ventilation/more fans.

I was thinking too hot too. Looks like a badass batch tho son. Maybe sit for a day or two and see if she shapes up. The flush might have helped. I've seen some bad shit where a simple flush cured her right up after a lil shock. Never know homie.
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A good homie of mine always says "Expect the Worst, Hope For The Best." Which in cases on RIU this quote is nice to keep refreshed. There's also "It gets worse before it shapes up" but the first quote I like more hence it's more positive. Bunch of nonsence, I'm new so I'm trying to "branch out" n make friends. Anything to help.
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Good luck homie.

The plant is doing better. Buds growing and leave are recovering. Fresh solution at 1500ppm with Cal-Mag added. Started with 4 plants, down to 2 Females. After this, I will redesign the flower room.

A week later and the plant has recovered nicely. There are bubs all over the plant. I am keeping the nutrient level at 1700ppm. It is drinking a lot of water.