Hello Devilvenom,

Nice aero grow tray you've built there, once you de-bug it you are going to be very happy.

First, I did not see mention of an air pump. But I assume you are probably running one to airate your nute solution. This is going to be the main source of your temp rise. The air pump is taking hot air from your room and pumping it thru the solution....if the ambient air temp is say 80degreesF, the nutes solution will rise to that fairly quickly. If your ambient air temp is 90degrees, well the solution will become that (at least) also. It happens in EZ clonners (that's how I figured it out) and aero system resivoirs. Move the air pump to the coolest location you can, even outside the grow area if necessary.

Second, cycling times could probably use an increase in off times. Currently in an EZ cloner we use 1 min on and 4min off. I have done experiments with a aero/fog set-up that I built, and it uses two seperate fog systems. One is based on a 150psi pump going to inpingement spray nozzles located in the lid. I have found that it needs to run 7 SECONDS every 30 minutes. The other fog comes from a Frapaplas fogger unit that pumps into the tray, it runs 10 minutes every 30 minutes. Either system on its own will run the thing. Redundancy is the way I deal with the pump failure issue btw.

Third, keep in mind that in using an aero/fog set-up you need to run less nutes. My initial experiments showed a 40% solution strength a good starting point and probably no more then 60%.

Guess this is a chance to post a pic of my aero/fog trays again. Mine are 4'x4' and have 138 holes that use 2" net pots and neoprene (Blackstar) collars. Two trays make up the system for a total of 276 plants sites.

NOTE TO WHOEVER; I know it is more then 100 plants, and makes it a "federal" case, BUT it is actually just TWO plants. Since they are clones from one mother, when these things are in production each tray is ONE root mass with 138 geneticly identical branches.

I also included a pic of the Frapaplas fogger unit. The BEST fog generator for horticulural use I have found so far.

Hope something here will help you. I look forward to seeing an update on how your're doing.....just don't give up.
oldmac Reviewed by oldmac on . New to airoponics, so check this out! side note just like to start by saying whats up 2 everybody, the usual's that i see a lot of post from ( you know who you are. informative). it's been about a year or more sense i posted anything worth reading and even then i don't think i contributed too much to this forum which is the only one i've actually been on to this point. So, I'm on the road to airoponic and phasing soil out, and i went big, too big i don't know this are some of the answers i will be finding out. i used two 70g Rating: 5