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Since I have some experience with hydro, when my son (10 yrs old) came up with a need for a science project, I suggested a comparison of traditional soil growing vs hydro, kind od a "Feed the World" project. Now, I know a bit about light scheduling & nutes foy MJ, but I don't know much about...

Ballasts have thermal cutouts - if they think it's too hot, they shut themselves down. That five-minute thing suggests to me that that's how long it takes to overheat. Make sure it's well-ventilated, maybe even set a fan blowing on it. That's a quick-and-dirty fix, but it sounds like that's...

Absolutely - AC pulls moisture out of the air.

There are actually three kinds of air movement to consider: 1. Overall air exchange. You want the total cubic feet of the air inside your tent exchanged with outside air at least once every five minutes. Two inexpensive 240cfm 6" duct fans, one blowing in and one blowing out, will usually do...

If your tent is 6 feet high, you have about 3 feet of usable grow space, from the surface of the medium to the bottom of the HPS. If the HPS isn't in a cool tube, you probably won't be able to get it less than 10"-12" from the plant tops. So you have two issues: 1. You're already getting...

If you have a temp problem, you need better ventilation. Fan capacity is measured in Cubic Feet per Minute (CFM). My rule is to exchange all the air in the tent at least once every 5 minutes. So, your tent is 10X10X8, or 800 cubic feet. A very common, cheap 6" inline fan is about $30 and...

Don't know the specs on your tent, but it sounds like you need to get some air exchange going. Stick an inline fan into one of the sleeves, blowing out, and make sure there's some path for passive intake. That's a minimum - it would be easier to help if you put up some more info, or pics...

Yes, I got 50 root riot cubes, bulk packaged in big ziplocks and wet. Like these. I've got a propagation tray set, heat mat (I've never used one but I figured WTF), and humidity dome. So this time I'm going to skip the paper towels and just put the beans in the cubes, and keep them wet. I've...

Sorry for your problems, Kentuckyboy. For what it's worth, I always buy from Attitude, always order the coffee cup, and never have an issue. Since the seed packets are in the cup, there's little chance of them getting crushed. And I suspect (hope) that a coffee cup being sent from "Attitude...

Ah, that's exactly the info I was looking for! Many thanks, Cues:clap:. The root-riot cubes I have arrived already wet; kind of a surprise, but I'll roll with it. I don't have matching coco blocks......do you think there would be any issue with using Grodan 4" cubes as the intermediate step...

If it'll fit in the budget, go with the 1K. 600's are the most efficient, and cooler than the 1000's (of course) but you'll definitely get better yield with a 1000W.

Oh, yeah, standing near my tents is like standing next to a 747 winding up for take-off:lol:. I did see some posts about DIY solutions for fan noise here on RIU; I'm sure you can find it in a search. The alternative, if sound is an issue, is to buy quieter fans - but they get expensive.

Yeah, after I cut this crop and there's space to work in there , I'm going to install a spreader. I envy you the water cooling - when I grow up I wanna have water cooling, too!:)

Like Whatstrain says, you really NEED airflow to go from outside, through your cooltube to outside with nothing to impede the flow. You will also need an exhaust fan that draws in from the tent and blows out through the filter to the outside. I would also recommend an additional fan of the...

I use exactly that system, and it works great. One thing: Be sure to wash your Hydroton thoroughly in a sieve before putting it in your tray, and then run your ebb/flow cycle several times and rinse the reservoir out completely. Hydroton is great stuff, but it does require that initial...

I'm getting ready to start a new generation from seed, and I have two questions. 1. Is there any special advantage to using the pellets rather than the paper towel method? Last run, I popped the seeds in paper towels, moved them to 1" rockwool cubes,then into 4" rockwool embedded in a tray of...

No bleaching, and those 1000's are bright:cool:. I have serious ventilation, (entire volume is replaced 4x/minute, theoretically), good internal air movement, and good temps/rh. The six g13 Haze in the grow tent closest to harvest drink about 3 gals/day of nutrient - it's ebb/flow. I don't...

Looks like basic nute burn to me. And it's not unusual that one plant is more sensitive than others. Just flush for a day or two, they should recover.

Agreed, and then some. I have two 4X4 tents in bloom, with a 1000W HPS in each. The lights are in cool tubes, with 240cfm fans set up as outside-to-outside cooling, and the tubes are barely warm to the touch. I keep them 6" to a foot above the canopy, and my ladies are thriving. There's no...

Right HERE $20 on Amazon. The clip is VERY sturdy, clips onto almost anything.