Hey jtdubz, I'm currently on my first grow with a simular set-up as you. I am growing in a 4x4x7 tent with a 600 watt Hortilux Blue bulb all the way through, a hydrofarm 6" inline fan with a phresh 400cfm carbon scrubber. I'm using promix hp for a medium and earth grow nutes as I'm growing all organic. I just started using earth juice ph-up as I recently read that the gh ph-up is synthetic and actually kills off beneficial microbes in the medium.
I started from seed on January 8, 2014 and as you can see from the first pic my seedlings are still seedlings lol. I've learned a lot by reading, but I've realized I should have done a lot more reading and preparation prior to germinating my seeds. So, it's been a lot of trial and error (mostly error) on my part. Here are some of the mistakes I made early on.
I started feeding nutes too early. I should have waited until my seedlings had at least their first set of true leaves or at least three weeks after sprouting.
I should have left the seedlings grow under my T5 light much longer than I did. I put them under the hid too soon. Bad economics on my part too lol
I should have waited longer to transplant into larger pots. By transplanting too early I stressed the seedlings pretty bad by disturbing the roots.
I should have let the seedlings develope a good strong root structure before transplanting
I hooked up my carbon filter right away and it was pulling not only the heat out of the tent but the little humidity that was available to the plants. I couldn't keep my humidity level above 20% without a humidifier. It also reduces the life of the carbon scrubber.
I should not have trimmed off dying leaves from the seedlings. The plants use the fan leaves for photosynthisis...duh
Here is a description of the attached pictures.
1. Seedlings as of today
2. Humidifier keeping the humidity level right around 45%
3. Box fan inside the tent
4. Right now I have duct coming in from outside the tent to the reflector then duct from the reflector outside tent to inline fan then to attic
5. Where carbon scrubber initially hung and where it will hang when the need arises in veg. Remember, a carbon scrubber in the tent creates negative pressure in the tent which is what you want when you get into flowering. It will also help to keep humidity down in the warmer months and pull the heat out. Make sure your vents on the bottom of the tent are open. Also, I use an idealair fan speed adjuster. It helps to maintain temperature in the tent and also helps to quiet the fan down.
6. My inline fan mounted on the celing outside the tent and ducted into my attic space. When it warms up outside I'll vent the tent outside through a roof vent.
7. Ducting bring room temperature filtered air into the tent to the hood.
Good luck with your grow dude. It's definitely a learning experience. Just let your plants do their thing. Easy on the nutes and light right now. Try to leave them alone and let them do their own thing. Buzz'd
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