Hello, having some troubles, please help

[Anny Tang]

I have 5 cars in a 3 gallon tank in coco coir (30% pearlite). I feed about 50% of the GH flora series and 50% of ClaMag. About 650 to 700ppm. I use purified water or distilled water, but I just bought an RO brother and I am going to work tonight. In the first month or so, these lights were taken under 560W pull-out blur box lights. For the past few days, they have been using HLG 600Rspec in a 5x5x6 tent 24/7. I eat about 20% of the runoff every day. It was not until last night that they installed a 395 cfm embedded fan. I upgraded to 700cfm and it was running at around 550 or 600.
These look a little drooping, and some of the new growth looks like zigzags and spindles. I think I may have been too low on them before. Is that the most likely cause?

 

[nickeluring]

If you give them as much CalMag as you give them nutrients I think you're giving them too much CalMag. I typically give my plants around 15% CalMag compared to the amount of nutrients.

 

[Jerry Tyson]

Without knowing more details, like how often you water, do you use nutrients every time, etc. my first conclusion based on a 650W light and no exhaust until last night is heat stress. In contrast to what some think, powerful LED lights do put off a lot of heat. You also have to acclimate the plant to the light stress by starting higher or dimmed if it has a dimmer and slowly lowering it until it gets used to it.

I think you’re saying you’re using 50% of the recommended feeding schedule of the nutrient and calmag?

 

[MochaBud]

I have 5 cars in a 3 gallon tank in coco coir

That's the problem too many cars in that tank all that oil and grease getting in there can't be good for plants

 

[Jerry Tyson]

She speaks better English then I do Chinese

 

[nickeluring]

If you use a text translator from Spanish to English, you're likely to get "car" if you write "auto".

 

[Jerry Tyson]

good point! I think it's safe to say there certainly were some things lost in translation.