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Coco grow with fox farms nutes and cal mag. Two weeks into flower these spots showed up. Wondering if the tiger bloom ( newest addition / only change) is creating a calcium deficiency. What's it look like to you guys?

I do have the vivosun control hub.

Well it's all set up. Check out the sap containing anthocyanins.

For now a 3x3 light, I plan to keep them on one side and the humidifier on the other side. I didn't mention but there will be a 6" exhaust fan, just is the 4" intake big enough?

I ran out of space and am ordering a 5x5 wondering if a 4" intake would be enough for that space

Problem solved. New humidifier 22 pint humidifier

Lung room*

I'm doing a cocoa grow and a 3X3. There are four plants in 7 gallon fabric pots. I have a 4-in exhaust fan that I just took the carbon filter off of (25% CFM). Before that adjustment even running 2D humidifiers I can't get the RH under 60%. I should only need 144ish CFM and I've got 148.5...

Comments?

The roots will grow through that white fabric pots from what I've seen, if we don't move up to the one gallon fabric pots before that completely happens

Also, you can't see it but they are on plant risers holding them above the drainage trays

The tap water has a ppm of 320. That's why distilled water which has 0, so we can control and measure the nutes right...

Royal gold tupur is the medium it's a coco coir pre buffered mix that has perlite in it, the solo cups are bottomless and they are in one pint fabric seed starters

These were planted on wed and it's sat. All they've had is pH 5.8 distilled water (ppm 0) The nute chart says feed. My buddy says they'll burn if the roots don't establish first. I've heard it both ways about ppm 240-400 is safe if they have their first true leaves they're photosynthesizing...