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Phosphorus def. Are you in coco? Locked out by ph?

This one is 1.4 sones the HTG is twice as powerful but 52 db is about the same as a dishwasher. 1.4 sones is probably about 33 db. Its quieter than a small non-oscillating fan from Lowes that was like $15.

Panasonic 240cfm draws about half an amp, whisper quiet if you wrap the box in rubber foam and use insulated ducting. $133 from westsidewholesale $209 retail. Also, hang it on rubber straps = no vibration through the walls.

Ceramic metal Halide will improve that spectrum but, needs to be matched to the right ballast. T5ho with 4000k bulbs were anemic compared to 6500k. Woody is right. T5ho can be kept an inch from plants with a fan on em. This keeps the lumens real close to MH that are 16 inches above. Less...

Take cuttings before you switch to flower. Just in case it turns out to be a great plant.

I agree 4' = better lumens and coverage. The get brighter at higher temps also, I think max is achieved at about 95 degrees. A couple 2 bulbs fixtures for sidelighting will help too. Bulbs from 1000bulbs.com are cheap like 1/10 the price.

T5's are usually rated at 20,000 hrs or 2.5years at 20 hrs a day. They get brighter as temps climb to 95f. At $3.10 each from 1000bulbs.com replacement should not be delayed past rated life.

I've got a few that weren't under enough light and started to sex early. You could smell em as soon as they showed hairs. Make sure you're at 18hours or more of light and if they reveg the smell will fade.

Yes it is. But it is still ok for now. It needs to dry out, get potted up and have the ph checked.

Panasonic inline fans are quiet..see westsidewholesale.com

They do work. You must keep them within a few inches of the plant. They bulbs produces max lumens when the air temp is high (higher than the old T8's). This can be a problem in a ventilated space. Local electrical supply houses may sell for less but they're not in the horticultural business...

Organic nitrogen can build up lock out nutes. Add micro nutes and some silica. Check your water chlorine will stunt it and flouride is in municipal water supplies as well. Water or soil ph could be causing lockout also.

Large (2qt) canning jars. A little heat will help the lids to seal or soak the lids in hot water to soften the rubber seal.

Phosphoric acid from General Hydroponics is used to lower PH. Go easy with it. Also, I was told that Botanicare strips out the micro nutes from their formulas. So you must replace or loose the plants.

Get a Panasonic inline or bathroom fan. Ultra quiet and not too expensive if you look around, try Westsidewholesale.com. The 240cfm shows air restriction with a filter on it so call it a 150cfm.

You know the answer to this one is of course it could. Get some 2700-3000k. Time is money.

Check your ph of water and soil. Go easy on the miracle grow until it starts to look happy. Don't over water let her dry out a little between feedings.

Not really, I had the same thing happen in DWC with Botanicare hydro. I added a micro nute from a nursery with iron zinc boron and other trace elements and a bit of miracle grow. It seemed to help and the damage was confined to the lower leaves. I figured it was the cold temps I was dealing...

I'm guessing they didn't get to 4ft tall if your macro nutes like cal mg are off. Aluminum copper and boron can all be toxic. But more likely you're missing some micro nute. Try a new brand of fertilizer for a bit (with different ratios).

Try distilled water. Too much sodium bicarbonate (baking soda) can lock out nutes.