roorsmoker
Well-Known Member
I haven't posted anything in a few months. Been busy moving/working.
Problem: Temperature is topping out in the upper 85+ degree area, despite plenty of airflow and an AC unit. I'm NOT flowering, nor am I using HPS until I correct this ventilation issue.
-I have a 4'X8'X6.6' tent with a 6 inch 545 cfm Vortex exhaust running full speed, pulling through two Apollo enclosed hoods with a 6 inch iPower carbon filter in front of the hoods. The bulbs are exactly 4 feet above the floor of the tent. Too low possibly?
-The tent is mostly empty of plants (9 seedlings taking up about 2 square feet). I had my 2 foot HO t5 envirogro on with the thermometer underneath the lights, with the t5 still on. Maybe the t5 light fixture absorbed too much heat and I got a bad reading? Thermometer is a Caliber IV digital. Maybe the black absorbs too much heat and gives a bad reading?
-The two hoods are each holding 1000W Eye Hortilux SuperHPS bulbs.
-I have an active intake blowing in the bottom opposite side of my exhaust. It is an 8 inch 745 cfm Hurricane sucking through an 8 inch Dustshroom (HEPA alternative) and blowing into the tent. I have an IDEAL air controller plugged into the 8 inch hurrcane. It's turned down to about 40%, as to not create positive pressure inside the tent.
- There is a 12000 BTU portable AC cooling the room the tent is in. The AC exhaust is blowing outside the house, along with the tent exhaust.
I know the obvious question is, "why don't you use the 8 inch for exhaust and the 6 inch for intake?" I could, but I would need adapters for my 6 inch flange (or a new flange), and adapters for my 6 inch hoods. And also a 8" to 6" reducer for my Dustshroom.
-Do you recommend I raise my lights/remove exhaust ducting? Buy better hoods (they seem pretty air tight, they have screws and a rubber seal)? Add a cheap 6" can-fan in between my two hoods? Any other ideas, like toughing it out and buying adapters, making the 8 inch fan my exhaust, and my 6 inch fan an intake?
Passive intake was actually worse despite tons of negative pressure. Maybe not enough passive intake?
Posting many pictures, sorry for the detailed question.
Anyone with any experience in HVAC at all, chime in please. It's also going to get very, very cold where I am in the winter. Its already in the 50s at night.
Without the HPS on, the temperature under the T5s drops about 6 degrees as opposed to no ventilation on at all.
Problem: Temperature is topping out in the upper 85+ degree area, despite plenty of airflow and an AC unit. I'm NOT flowering, nor am I using HPS until I correct this ventilation issue.
-I have a 4'X8'X6.6' tent with a 6 inch 545 cfm Vortex exhaust running full speed, pulling through two Apollo enclosed hoods with a 6 inch iPower carbon filter in front of the hoods. The bulbs are exactly 4 feet above the floor of the tent. Too low possibly?
-The tent is mostly empty of plants (9 seedlings taking up about 2 square feet). I had my 2 foot HO t5 envirogro on with the thermometer underneath the lights, with the t5 still on. Maybe the t5 light fixture absorbed too much heat and I got a bad reading? Thermometer is a Caliber IV digital. Maybe the black absorbs too much heat and gives a bad reading?
-The two hoods are each holding 1000W Eye Hortilux SuperHPS bulbs.
-I have an active intake blowing in the bottom opposite side of my exhaust. It is an 8 inch 745 cfm Hurricane sucking through an 8 inch Dustshroom (HEPA alternative) and blowing into the tent. I have an IDEAL air controller plugged into the 8 inch hurrcane. It's turned down to about 40%, as to not create positive pressure inside the tent.
- There is a 12000 BTU portable AC cooling the room the tent is in. The AC exhaust is blowing outside the house, along with the tent exhaust.
I know the obvious question is, "why don't you use the 8 inch for exhaust and the 6 inch for intake?" I could, but I would need adapters for my 6 inch flange (or a new flange), and adapters for my 6 inch hoods. And also a 8" to 6" reducer for my Dustshroom.
-Do you recommend I raise my lights/remove exhaust ducting? Buy better hoods (they seem pretty air tight, they have screws and a rubber seal)? Add a cheap 6" can-fan in between my two hoods? Any other ideas, like toughing it out and buying adapters, making the 8 inch fan my exhaust, and my 6 inch fan an intake?
Passive intake was actually worse despite tons of negative pressure. Maybe not enough passive intake?
Posting many pictures, sorry for the detailed question.
Anyone with any experience in HVAC at all, chime in please. It's also going to get very, very cold where I am in the winter. Its already in the 50s at night.
Without the HPS on, the temperature under the T5s drops about 6 degrees as opposed to no ventilation on at all.
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. So they are probably drinking more than they should. I pH'd the coco at 6.0 and the water has been 6.0-6.2. This is a high pH from my experience in coco, but a lot of people have told me recently to pH coco to 6.0-6.5 for veg and 5.5-6.0 for flower.
