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However

To be honest I think their meant to push through.

Inside your tent you have an incredible strong light shining directly at the walls, zips ect. Outside your tent you have a weak light source or the sun, shining at weird angles . There's hardly any photons, if not none getting through from the outside. It's not really something to worry...

Pick the light that suits your space. Full spectrum is a sales blurb

I was under the impression these were flowering plants. Hence the suggestion

Yeah, the exhaust fan.

Usually 48h you should see improvements if that's the issue.

I think it's one tablespoon per gallon. Which is 3 teaspoons, so your probably a bit over. Try half a teaspoon You can always spray more times.

Plants produce anthocyanins for a number of reasons. Apart from phosphorus, iron or mag def , they also produce them as a protection due to low temp and high light levels .

Under LED In veg about 82f In flower 78f Can't you turn your extractor down more ?

FYI magnesium deficiency doesn't start at the top of the plant

The biggest issue you've got is your temps are 68f lights on. You need to do something about that ASAP. Lower extraction or add heat

Yeah sorry, typo. Soon as you flip to flower 100%

109% at 16" distance

Light output I more important than spectrum, within reason. But the problem you'll find is these cheap lights are not great on the output, so you end up using more wattage to do the same thing, that means more heat, higher bills. Honestly, Id keep my eyes peeled for deals on grow lights. All...

Honestly, one nutrient is as good as another.

I've used canna for years. Started with the whole regime, after 2 year switched to just the base nutrients (canna AnB) All the rest is just fancy labels and silly prices, it's really not necessary at all. Try it

Yeah, great! But the OP is in a 2x4x5.

You need to buffer it. Also I'd switch your ph to 5.8 - 6.2 You need to water it regularly to run off. Your ppm is a bit strong too.