Quote Originally Posted by jer001
wow thank you soo much information

distance - ok to start the plants are about 1 feet to 2 feet away from
the light...

drip system - I found it is best for me to manually turn it on
every 2 - 3 days ...

Water - I dont get the ppm

Ventilation - is 105 cfm ok for the exhuast

lighting - Mother plants, have t5 sun 48" lower to the side of the plants
- MH vs HPS which one is for flowering and which one is for veg
- Flower room (left my air cooled room) has a lumetec ballast
that is interchangable between MH and HPS but my veg room
only has a MH ballast

temps - 82 at the top of the plants under the light
In regards to your drip system.. 2-3 days seems like a very long time in coco. You never want to let your coco dry out.. never ever ever. It destroys the little hairs on the roots. Coco needs to stay constantly moist; not wet.. not super saturated (which is close to impossible to do anyway) but moist.

I water my coco about every 1 - 1.5 days. Also with coco make sure you are always getting about 10-25% runoff. This is also pretty important.

Your lighting seems very high up. Needless to say a vented hood and inline fan would be much more ideal as you could get it closer to the canopy, prevent stretching, and increase photosynthesis of your plant. I would strongly recommend it if you have a little bit of money to spare. Even a squirrell cage fan hooked up to a cool tube would be a marginal cost ( less than $100 if you shop around) and would drastically improve your situation.

PPM: You may want to get an EC meter along with a PH meter. PPM is not as critical as a PH meter but can be a very important tool when trying to diagnose problems.

At the moment I don't know how much of each product your feeding or what your tap water PPM is at baseline. It is possible that you are feeding too hot. This is where an EC/PPM/TDS meter would be handy.


edit: about your exhaust 105cfm for the fan is ok I suppose. Definitely the math adds up. However you mentioned that you have it set as an intake. Flip it around and make it an exhaust instead.