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Looks like nitrogen is required.

43 watts per sq ft is very near the "ideal" HPS wattage of 50.

This is gonna be good. :spew: Not all LEDs are created equal. Most are not suited to cultivation.

I've observed some strains like more watts per sqft than others and can tolerate growing right up to a 1000 watt air cooled hood.

Lol do you not comprehend his room is in a pole barn type structure, not a residence.

Use alcohol to clean rollers and rail.

This is like proving a negative. Or like trying to teach life lessons to a teenager with know it all complex. Trying to tell someone that can't figure hydro out that hydro is better is like talking to a wall. LOTS of people have had improved results from hydro thus PROVING it can be done. If...

Passive Intake area should be 2 - 3 times the exhaust area

The lack of responses likely indicates there is no advantage unless you enjoy worrying about clogged sprayers.

Grind up the buds before packing the tube. Greater yields. Freeze tube prior to blasting and use unbleached filters.

Put your intake on a thermostat. Add dehumidifier and possibly heater during dark cycle.

If the dedicated feed is truly dedicated and only for lighting, and the ballasts support 240v operation, convert the feed to 240v.

I run a 110 lpm pump on 6 stones.

That pump is weak sauce.

What kind of airstone and pump? The air stone needs to be directly under the roots. Any roots outside the air column are likely to suffer. Air stones clog. Never reuse. I change them out when I start a plant and again when in go to flower. Multiple stones is good as long as the pump can...

Pretty far gone. Might try physan 20 soak followed by weak nutes with hygrozyme. Fix the problem, more oxygen.

Wiccan weed conjourer

Give her time. She's a long cycle sativa. Patience grasshopper.

OMFG ease up on that tree you've been hugging before you strangle it to death.

Res changes only required every 10 days. Large res dwc sites topped by float controller from RO. Start pH low and let it swing up between changes 5.5 - 6.0