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Thanks. I dumped, cleaned and added straight water and then turned the pump on for 90 minutes to flush. Then I emptied again, rinsed, filled and mixed a fresh batch at 100% on spec. We'll see what happens. Thanks!!!

These plants have gone from a beautiful deep green to this light yellow in about 48 hours. I'm not sure if this is a nitrogen deficiency or a lockout situation. I foliar fed a few days ago and got some very light burning. I sprayed heavily but the mix/ratio was recommended. If anything a little...

Thanks for all the input. I removed the affected leaves and lowered the light a few days ago. The symptoms have NOT returned. I think I just had the lights too low/too bright.

I'm not using coco as a grow media, I'm using hydroton. The coco mat is simply laying in the bottom of the flood table. The table drains back to the reservoir.

invest in a Mr. Cool mini-split A/C system. & a Quest dehumidifier. You won't regret it!!!

I'm not using coco. I just have a coco mat on the bottom of the flood tray. I'm using air pots with hydroton and top feeding every 3-hours. AN Ph Perfect grow, micro and bloom. EC is currently 2.0. Not sure where it started. I'm using the AN feed chart exactly as it's printed. No nute burn. This...

I have raised the light. It was probably too close. I also put out some sticky traps. I do have something eating the tips of the plants. Give it a couple of days and I'll have them trapped in the glue strips. My Ph is 6.2 and I don't drain to waste. It drains back into the reservoir.

heat & humidity .. welcome to the South!!! That's why I have an indoor sealed grow!!!

Any ideas what this is? I have 6 White Widow in a sealed grow room, 1k LED @ 12", chiller, rooms temps 80 degrees, top of plants 86-88 degrees, quest dehumidifier, CO2, AN Ph Perfect. I just flipped to 12/12 a day ago after 2+ weeks veg, 4 from seed, room RH is 60%. Everything in the...

I have an EcoPlus 1/2 HP commercial chiller that is set to chill 40-gallons to 65 degrees. It kicks-off/on every few minutes and only runs for a minute or two. It's almost constantly cycling. Not literally but almost. The ambient room temperature is 75 degrees. Can I put a cycle timer on this...

make/model and price point?

possibly. but the bad will almost certainly outweigh the good! I've been growing since '95 and have never added beneficial microbes. not purposefully anyway.

because light allows bacteria growth...

LOOKING GOOD! I'm a HUGE fan of DWC/RDWC . . . but I just recently switched to a flood/drain setup where I'm top feeding versus flooding. The overall setup is much simpler and easier to maintain than several 5-gallon buckets! I have a sealed room built specifically for indoor growing, so I...

I have a flood/drain table that's set up for top feeding with a coco mat underneath. My PH keeps rising to 6.8 - 7.0 despite my best efforts. I'm using the Advanced Nutrients Ph Perfect line. Will that coco mat cause the Ph to rise?

NextLight MegaPro - https://nextlight.com/index.php?route=product/product&product_id=148&gclid=CjwKCAiAiKuOBhBQEiwAId_sK3FhIvDFIfNkFnwmjnwTS43rEZN6DIAB3tI8XH21tQDm3X-g8QUjwRoCiDYQAvD_BwE This light is AMAZING!!!

I've seen a couple of white papers where they recommend top feeding versus flooding and then draining. The increase in yields was substantial. Water with enough frequency that the roots don't dry out. I would start with every 8-12 hours during the day.

I'm using a coco mat at the bottom of my flood table. I'm using a flood/drain setup but will top feed. What issues should I anticipate?

I don't know if you mentioned a water chiller. Any good RDWC grow needs a solid chiller!!!

Hire a professional who has designed grow room! You are about to invest $500k-1M+ and are getting advice from a bunch of yahoos on a forum? Hire a CONSULTANT!