New Commercial Building- HELLLLP

Ok guys.... time for me to eat a huge slice of humble pie and reach out for help...

im in a brand new commercial building i built from the ground up... new dosatron system and all

so in a couple 4 light (gavita 1000) veg rooms the plants look practically perfect! had an issue with the irrigation where the watering volume was incosistant, defective octo heads... fixed that so each minute of watering now puts out 120ml

had an issue where my res tanks were way too cold at like 50*... just fixed that and now theyre almost at 70* (66-67)

once i moved the plants to the big 22 light room everything started looking like shit in 3 days so i kept the plants on the 18hr veg cycle until i can get them to bounce back

only things that changed are more lights but they're dimmed down to 650w, the veg nutrients got switched to flower nutrients...

any fucking clue whats going on??? veg feed was at 1.6ec, flower nutes are at 1.8-2.0 ec

i keep putting some healthy males in the room to see ive fixed the issue and the leaves all start curling down after 3 days... ive never had plants look this shitty and with the electricity bills and all i need to get this straight ASAP

you help figure it out and ill hook it up with a nice little pack of some fire seeds.....

here are some pics.... HELLLLP

OH YEAH im just using floraflex a/b with calmag (calmag at .3ec)

couple more pics

and heres a couple leafs that i see something going on with in the veg room where plants are all looking perfect except this on just a few plants

I do the same thing and move my plants from a veg room to a flowering room. The flowering room is a lot brighter and has CO2 so I run it warmer. I used to have the same problem and I pinpointed pH as the culprit. When in veg rooms they weren't needing as much nutes so the fact the pH was off didn't bother them. When they needed that food the pH being off was noticeable. I had to raise my pH and the problem went away.

I don't know what your medium is but you may look at trying a few plants on a different pH, maybe several groups, some a little higher and some a little lower than what you are using now, perhaps a control group to make sure any changes are due to the pH adjustment. I hope this helps.

Thanks for the tip, it seems reasonable but with the dosatron system it says my ph is between 5.6 and 6.1... I've checked several times and it seems the ph is on point. I'll look into it a bit deeper

I do know my well water is low ph so after RO the water comes out at 11ppm

It takes quite a bit of ph up to get out where it needs to be... I'll check the runoff of some plants tomorrow.

Btw I'm in rockwool. Any other insight???

Well I thought I was on point at 6.3 and when I went up to 6.5 problems went away (peat based soiless mix). Something is limiting uptake IMO.

Here's more pics showing how the leaves curl down... I can feel the gray hair is growing

Definitely pH.

Renfro said:

Definitely pH.

Click to expand...

yup, locking out calcium for sure, which makes it hard for the plant to use mag, mang, P, K...

Yup... so on the 500 scale I'm pretty sure its about 170ppm of calmag they're getting. I'll run a test on the dosatron tomorrow to make sure that's what it's coming out at.

And I agree it looks like ph is outta whack which would cause all sorts of lockout issues explaining my symptoms but the ph seems to be coming out at 5.8-6.1 when ever I check, like I mentioned i'll do a runoff ph check to see what that looks like in the AM.

shitty pic but here's a screenshot when I just checked in on my camera (don't have a laptop dedicated to the facility yet to run the connect software so I can keep an eye on it there instead)

There's a hose in the way but it says 960ppm (500 scale) and 6.1 ph

So I'll look hard into those tomorrow but what else might this be??? I haven't thought to but i'll hit up general hydroponics tomorrow to see if they have any calmag suggestions....

I've always run it at 100ppm (.2ec) under 1000w single ended lights... now im under gavita 1000's (dimmed to 650 since the plants are freaking out) with 1000ppm of Co2 which I want using at my old spot.... is it possible the 170ppm of calmag im giving them is way too little since they're in such a demanding environment.

I think not but i'm lost if the ph runoff comes out good like I suspect due to the stable ph dosing I've been seeing.... I have an etatron eOne microdoser for ph.

This is an old picture of the dosatron system before it was all setup

And I just noticed you said 6.3 to 6.5 made your problem go away! That's surprising, i'm assuming you're in soil where I'd think 6.3 would be just fine.

Since im in rockwool I've always been 5.8 on veg and bloom, plants always looked immaculate on my old setup with those ph's... been growing for a long time so that's why im stumped, but this environment is very demanding with the lights and Co2

In rockwool you treat it like hydro which typically is cool between 5.5 and 6.5 with around 5.8ph said to be optimal

So if we assume it's not my ph ( if I get good runoff numbers and closer monitoring of system shows it to be stable) what do you think it is/could be???

Im starting to believe its calmag ratio issue... I wonder if maybe i'm putting in too much/too little???? But again I'm pretty sure i'm around 170ppm (.3ec) calmag

Does your dosatron add ph up right to the res with nutrients in it?

Adding ph up to mixed nutrients will make the calcium percipitate out of solution. Thus your plants can not uptake correctly.

I would also wonder if they might be staying a little to wet. Rock wool holds a ton of water and if they stay to wet they can also lock out and stop up taking nutrients. Is it possible this could have been an issue that was progressing and just got to the lockout point when they went into the flower room.

What is your room temp? what is your humidity? room VPD? this will all change when you put plants in the room. You should look at how many times a day are you watering? how long are you watering? moisture content of your medium? bigger rooms require more attention. What nutes are you using? Plants require different amounts of feed at different stages. NPK is big you can't just add one thing to fix another mid grow. Try Jacks 321 10oz for veg and 16oz for flower of each part 1-2-3 in a 55 gal rez or floraflex V1 V2 and B1 B2

Slimjimham said:

Ok guys.... time for me to eat a huge slice of humble pie and reach out for help...

im in a brand new commercial building i built from the ground up... new dosatron system and all

so in a couple 4 light (gavita 1000) veg rooms the plants look practically perfect! had an issue with the irrigation where the watering volume was incosistant, defective octo heads... fixed that so each minute of watering now puts out 120ml

had an issue where my res tanks were way too cold at like 50*... just fixed that and now theyre almost at 70* (66-67)

once i moved the plants to the big 22 light room everything started looking like shit in 3 days so i kept the plants on the 18hr veg cycle until i can get them to bounce back

only things that changed are more lights but they're dimmed down to 650w, the veg nutrients got switched to flower nutrients...

any fucking clue whats going on??? veg feed was at 1.6ec, flower nutes are at 1.8-2.0 ec


i keep putting some healthy males in the room to see ive fixed the issue and the leaves all start curling down after 3 days... ive never had plants look this shitty and with the electricity bills and all i need to get this straight ASAP

you help figure it out and ill hook it up with a nice little pack of some fire seeds.....

here are some pics.... HELLLLP

OH YEAH im just using floraflex a/b with calmag (calmag at .3ec)

Click to expand...

Those pics look like floro burn and heat stress. Next time transitioning use every other lamp and adjust acordingly. You went from 4 lamps to 22 lamps? Thats a huge change.

I think I have the solution.... talked to a commercial grower I believe knows his shit, he said the 18hrs of intense light from the gavitas was just too much for the plants.

It makes sense and i thought it was a big difference but had never experienced it... I've seen the jungle boys veg room with only some lights on... I believe this is why

I'm going to try to have a bunch of les turn off after 12hrs and only have a few on the remaining 6

I'm not sure if you read my post, but the ph up issue can be a major thing. If you look into it a bit ph up is ALWAYS supposed to be added to plain water before you add nutrients. Same with most Si products for the same reason. They percipitate your other nutrients out of solution. Your plants look deficient to me, not light burned. Anytime I've let my plants grow to close to my lights I've seen the closest leaves to the light fade to yellow and then bleach to white.

Your situation could also easily be lockout from the massive VPD change in the new room.

Ok guys soon without doubt it was the lights... Too much light over 18hrs... Even at 650w (22 gavitas in the room)

Once I dialed it back to 12 hrs they INSTANTLY bounced back.

Now they're all looking great!!

Still some dialing in to do and not on my phone with pictures now but I'll post some soon .

Man that shit had me feeling DOWN ha... Just getting used to the new shoes and dialing things in as I go. Shit filled in heavy, I can only imagine how things will go with everything on point!!!


So if you see this and are using a bunch of gavitas in veg it looks like this is the issue!

12hrs of light I've been slowly bumping up the watts just to lower the stress and just bumped em up to 950w... They'll be pushing 1000w in the next couple of days

Slimjimham said:

Ok guys.... time for me to eat a huge slice of humble pie and reach out for help...

im in a brand new commercial building i built from the ground up... new dosatron system and all

so in a couple 4 light (gavita 1000) veg rooms the plants look practically perfect! had an issue with the irrigation where the watering volume was incosistant, defective octo heads... fixed that so each minute of watering now puts out 120ml

had an issue where my res tanks were way too cold at like 50*... just fixed that and now theyre almost at 70* (66-67)

once i moved the plants to the big 22 light room everything started looking like shit in 3 days so i kept the plants on the 18hr veg cycle until i can get them to bounce back

only things that changed are more lights but they're dimmed down to 650w, the veg nutrients got switched to flower nutrients...

any fucking clue whats going on??? veg feed was at 1.6ec, flower nutes are at 1.8-2.0 ec

i keep putting some healthy males in the room to see ive fixed the issue and the leaves all start curling down after 3 days... ive never had plants look this shitty and with the electricity bills and all i need to get this straight ASAP

you help figure it out and ill hook it up with a nice little pack of some fire seeds.....

here are some pics.... HELLLLP

OH YEAH im just using floraflex a/b with calmag (calmag at .3ec)

Click to expand...

Look, I don’t know so much but; that there is ph burn between the leaf vains and over watered with lots of nitrogen.... Can’t say the light increase is responsible here : gavitas at 660 is so low even wit 96 of em that would not happen, unless your room is the oven... looking like a lot of stress material to come, run a low flush dose of base at 250 ppm let dry have strength the dose of your nutes and cut your feed run times in half.. you can keep the seeds, and find another building for those males... senseless to grow inside if your after weed weed... I’m just sayin?????