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This is my first grow I'm doing three plants in soil under 400w hps in a 3x3. They are 5 weeks 6 days from breaking soil. I'm slightly worried about vertical height so I'm thinking of flipping in the next few days. I was having some pH problems but I think they are resolved for the most part...

This is my first grow I'm doing three plants in soil under 400w hps in a 3x3. They are 5 weeks 6 days from breaking soil. I'm slightly worried about vertical height so I'm thinking of flipping in the next few days. I was having some pH problems but I think they are resolved for the most part...

I'm gonna have to let someone with more experience take over. To my untrained eye it doesn't look too bad, maybe slightly overfed by the dark green color. Again I'm not very experienced so hopefully someone else will chime in.

How often do you water?

400w hps

It's about 4 weeks into veg.

Turn off the blurple lights and post new pictures. Can't see much with those lights on.

If it's one of those moisture light pH combo meters I think you are using it incorrectly. If I'm not mistaken you have to mix a small sample of soil with water till it becomes mud then test it.

The leaf is from the bottom of the plant. New growth is a darker green. Still spreading among the bottom of the plant so I cut affected leaves since they're not getting much light anyway. Is it a nitrogen deficiency? I have a feeling this came from a previous pH problem I was having.

Does the hydration level of the plant effect absorption rates of nutrients in a foliar spray. Do stomata open more when hydrated or dehydrated? Trying to optimize nutrient uptake in my foliar sprays and wondering if it would have benefits to time the sprays to be on days that my plants are a...

Get some perlite it's pretty essential

Yeah get those seeds off of there. Just be gentle, they pop off easier than you expect!

With the two lights and the rest of your setup you'll do just fine. Don't stress too much you'll figure out any small issues that inevitably arise as they come.

I vent my 3x3 with a 400w hps into my attic. Temps went from 89 down to 70. My room stays cool even if I keep my window closed. Go for the attic venting it works great. If you don't want to run any ducting try just dumping the heat into the room outside the tent. Depending on the room size you...

No room in the tent to run another with my air-cooled hood

Anyone ever tried alternating hps and mh daily during veg? I only have one ballast but it can switch between the two. Would there be a benefit from mixing them?

Yeah the more I think about it the less my idea makes sense lol. I need to stop posting while I'm baked.

Fair point, I just thought maybe it would also double for increasing aeration to the roots?

I have an idea for increasing soil drying capability without having to transplant into better soil mix. What if you drilled a bunch of holes in a small diameter PVC pipe. Then cut two holes on opposite sides of the pot. Push the pipe through the hole and then out the other side, removing the...