Not a problem man. Happy to help another grower.
Id personally cut the ppms, and flush a little.
I'd take a read of your waste. Both ph and ec.
Get the ph and ec to match what's going in.
If you're using calmag, id personally cut it out for the flush. Just use some base nutrient. Maybe 200ppm or so.
Get the waste readings down.
If they dont perk up by tomorrow. Then id bump up your base nutrient, and maybe add some calmag.
If you have been supplementing calmag. How many ppm have you been adding of calmag to your RO?
Sounds like your light is ok. I was worried it was too strong. Thats cool.
Flush with base nutes 200ppm. No calmag.
Match the waste to whats going in. Ph and ec/ppm.
No improvement tomorrow. Up your base nutrient, and possibly supplement a little calmag.
Its important to let us know if you have been adding calmag. Because too much calmag can cause a lot of problems. Especially if there's sodium in your coir.
Best of luck dude.
Tim.