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I realize you are getting a lot of answers but my suggestion is extremely easy to test and you have your answer within 24 hours. Raise your heat! Your VPD is way off. This is extremely common for new growers using LED’s. Your leaf temp is likely in the low 60’s even though your air temp is 71...

This! Exactly what I meant when I said VPD. Try and see what happens!

My suggestion was very simple to try and no risk to your plants. Try it and see if it helps. If not, sorry. Not sure why I got flamed for suggesting this.

I would strongly recommend you have some type of chiller. If you do, don’t run sterile, run beneficial bacteria like hydoguard and orca together. If you can’t control water temps you definitely should go sterile to prevent rot. Also, however much air you think you need, you probably need more...

My plants have looked identical to this before and it was VPD issues every time. Specifically my humidity was way too high. Lowering my humidity and raising my heat slightly fixed the issue really quickly. 22 C is 71 F, which is way too low. I’m almost certain thats your issue. My plants grow...

Thanks for the tips! I like the idea. So what type of pump do you think I should get instead of the magdrive? I'm willing to spend more money on the front end to make sure I do this the right way. Dude, your setup is awesome! That video was incredibly helpful. Love how you designed the return...

This is exactly what I was trying to figure out. So how do I determine what size pump I need if I use the 1" hose? Is there an equation or something? Themlouds, thanks for the tip on the ebb/flow screens, that's a great idea. Can you give me a few more details on your setup? It sounds very...

Hi Everyone, I'm a longtime lurker of the boards but this is my first time actually posting. Up to this point I've been able to find answers to all my questions by reading other posts. Anyway, I'm running into an issue in the design of my new 4 bucket undercurrent system. I know that with a UC...