I’m a first time grower. I have 3 blueberry kush feminized sprouts about a week and a half old. They’re growing in coco coir under 6 40watt 6400k cfl lights.
Temps are btw 24C and 28C, humidity is btw 35% - 40%.
My water source is from a borehole with +50ppm. I feed them with 2ml of floranova grow mixed with 4 litres of water. I also add 2ml of plant magic (magne-cal) to the solution. My nute solution Ph is btw 5.5 and 6.0. I water once a day with ordinary water of PH 5.5 - 6.0 and i feed them every other day.
On day 10 began to notice some brownish patches on the tip of the leaves of one plant and on the side and centre of another. I also noticed purple coloration on at the upper part of the stem (btw the first and second node).
The leaves also have some kind of 3D look to the surface. They have grooves that run over the veins making it look somewhat wrinkled.
Can anybody please help me examine the pictures and tell me they think about my plants.