Plant problems, would apprecaite your input zandor

[Timdog]

Hi,

done a substantial amount of reading and have a problem i'm a bit perplexed with as a few possibilites present themselves.

helping a buddy do a first grow in this setup. previously have done outdoor quite well, and indoor twice many years ago (but that was soil). this setup is duped from another friend's very successful setup using same everything down to the clones' mommy.

First plants are under 2 x 1000w hortilux's, air cooled hoods, sealed room, ac unit w/ condenser intake and exhaust (79* day, 74* night), dehumidifier (holds at about 50% +/-) co2 (holds at 1500ppm during daytime), running cutting edge solutions, bloom, micro, plant amp, and uncle john's blend. clones (lavender purple) were vegged 8 days then kicked to 12/12. i flushed with water when i switched and cleaned the res, etc. ph is about 6.2, nuit ppm 950, water temp 76*. plants are in pure canna coco on tray that fills once a day.

i thought the problem was over-watering as the coco sure holds it andi ran the timer a bit too long in the beginning so they haven't had any water for 5 days and now the coco is drying out. i foliar fed half yesterday with epsom salts in case it was a mag deficiency but i haven't seen improvement yet. pics are attached but are under hps light so sorry about the tint to them.

as you can see the plants are too small for the age and growth has slowed tremendously. leaves are yellowing from the tips inward and eventually dying. many dead ones have been removed already. roots (looking through the bottom of the pots) are white and very fuzzy. look healthy. stalk down where it enters teh soil doesn't look discolored at all. solution is a week old at this point and has a circulating pump as well as 2 bubbler rods in it. no bugs.

any help would be greatly appreciated.

Thanks a million.

[Timdog]

last pic.

thank you

[Timdog]

also, when mixing epson sales, i did 1/4 tsp per quart warm water. then i let it cool down before misting. does epsom salts last a couple days in a spray bottle or does it need to be remixed daily?

thanks again.

[Timdog]

also tap water was used to flush them. tap water is ph 7.0, tds 170. have 80 gallon res. when mixing i follow directions but only mixed it for 60 gallons of water (but used 80).

i do have a fan blowing on them. lights are definately not too close. with the air cooled hoods i can put my hand right under the glass and its warm but not hot. hoods are cold. bulbs/ballasts/everything is brand new.

and these same clones were grown last summer outdoor great using 90% coco and 10% soil w/ metanaturals nutes.

also notices not all of the dead leaves (but some) have purplish stems. also a few of the plants are starting to get purple color in the stalks.

[turtle420]

First plants are under 2 x 1000w hortilux's, air cooled hoods, sealed room, ac unit w/ condenser intake and exhaust (79* day, 74* night), dehumidifier (holds at about 50% +/-) co2 (holds at 1500ppm during daytime), running cutting edge solutions, bloom, micro, plant amp, and uncle john's blend. clones (lavender purple) were vegged 8 days then kicked to 12/12. i flushed with water when i switched and cleaned the res, etc. ph is about 6.2, nuit ppm 950, water temp 76*. plants are in pure canna coco on tray that fills once a day.

Nice setup dude.... :thumbsup:

[Zandor]

How good is your water to start with? Is there a chance of chlorine in the water?

One problem is it looks & sounds like under watering too. Strange

Remember clones inherit the age of the mother so after the first week of switch you should only use 1/2 strength the first 5-day's or so then bump it up. You are using CO² and pushing them but it sounds like you may not be giving then enough nutrients to keep up with the rest of the push.

I use Epson salt in the res tank not as a foil spray. Moist leaves with just Ph adjusted water and maybe a little B1 is fine in vegetation cycle and the first 2 weeks of flower but after that you run into chances of bud rot. When you have a spare buck or 200 lying around you should think about a sulfur pot. If you have mold that will kill it fast and not harm the plants or the taste.

You may want to put some kiddy play sand on top of the dirt for your plants; it looks like there may be some roots on top of the soil.

[Timdog]

Nice setup dude.... :thumbsup:

thanks. i've definately got some time and money in it. now if i could just get the glitches worked out i'd be a happy camper :)

[Timdog]

i'm not sure how "good" the water is. but i can tell you these clones were grown over the summer outdoor using the same water. all i did was ph it and add nutes before watering as it wasn't hydro. so i doubt it was water.

the reason i didn't water them was because the pots were very saturated. after a day of skipping water i could pick them up and tilt them and get a couple drips. i'm not worried about mold right now as whatever is happening has slowed the growth to where there aren't any buds to speak of.

i said this was a dup setup of one that works well- when i first started it i had the tray fill pump set to 10 minutes. we thought that was what the other setup was doing but it turns out it was only 6 minutes. so with the extra 4 minutes i was pushing more water which is why i backed it off.

i apprecaite your advice about the sulfer pot, but am i correct in thinking you believe this condiditon is just from under-watering? i was thinking i might have locked them up from hitting them too hard combined w/ over-watering but wasn't sure how to proceed. i wil set the watering timer back to its regular cycle tonight and see how it goes.

so it doesn't look like nute burn or a mag def? i thought that because i noticed some of the leaves have purplish stems + few of the plants are starting to get purple color in the stalks would indicate a mag defiency?

should i add epsom salts to the res?

thanks again





How good is your water to start with? Is there a chance of chlorine in the water?

One problem is it looks & sounds like under watering too. Strange

Remember clones inherit the age of the mother so after the first week of switch you should only use 1/2 strength the first 5-day's or so then bump it up. You are using CO² and pushing them but it sounds like you may not be giving then enough nutrients to keep up with the rest of the push.

I use Epson salt in the res tank not as a foil spray. Moist leaves with just Ph adjusted water and maybe a little B1 is fine in vegetation cycle and the first 2 weeks of flower but after that you run into chances of bud rot. When you have a spare buck or 200 lying around you should think about a sulfur pot. If you have mold that will kill it fast and not harm the plants or the taste.

You may want to put some kiddy play sand on top of the dirt for your plants; it looks like there may be some roots on top of the soil.

[Timdog]

one thing i forgot is there aren't any roots on the top of the medium- its just the way the coco looks combined with teh hps.

[Timdog]

Well last night we dumped the res, flushed all plants and started out a bit lower on the PPM's. right now i'm at ph 6.0, TDS 800, and water temp 70*. given they aren't growing hard i lowered the co2 to 1300ppm during daylight hours.

as of today the plants still don't look any better. how long should i wait before trying another solution? two days of foliar epsom salts on 1/2 of them didn't make a noticable difference. i'm also back to the once-a-day watering method.

last q- if running in a sealed enviro, can you run too much co2?

[jahjahjahjah]

So the ph def wasent it.

[Timdog]

i don't think so as half of them were foliar fed for 2 days and it didn't make any difference. it would be nice to know how long to chill before trying to find out what "plan b" is..

[Zandor]

when you have a sealed room you sould exchange the air once a day at the very least.

Well then I guess you don't need the play sand then thought they were roots.

[Timdog]

question- if i have proper temp, humidity, and co2, why exchange air?

[Zandor]

To remove stale air and organic gas build up. You want the plant to be as healthy as possible donâ??t you?

[Timdog]

yes of course i do. what i'm asking is exactly what am i removing from the air? i'm just saying it won't get musty from the dehumidifier, heat isn't an issue, and since i'm adding co2 and the plants put off o2 what exactly am i doing wrong? having it sealed keeps out bugs as well as smell. obviously you've been at this longer than I have but what is it that my air is lacking given my situation? i would apprecaite some experienced input as for what the technical benefit is.

thanks!