Easy Diagnosis Right? PICS POSTED

i think anyone would agree that i have heat stress or salt buildup or both right? well look at the pic of the thermometer(70 deg F constantly i have ac unit). also i have not used anything but ro water except last 2 weeks i used 1/4 strength nutes. oh ya and i just flushed w ro water for 2 days because i thot i had salt buildup. problem seems worse after flush. so what is it? ive went from 24/7 water to bone dry but problem still exists. whats yr diagnosis?

this is hydro right are you useing any H202 i woould add some to add some 02 to your water could your res be stagnent how do roots look like ???? when i usally see a plant looking like that it tells me one thing over watering is there any leafs changing light yellowish ??? whats your Ph @

They look hungry IMO.

gotigers0420 said:

They look hungry IMO.

Click to expand...

im hoping thats what it is. i just introduced some blueberry clones this week so i didnt up my nute strength but on thurdsay im gonna up em. so im a 1/4 nutes now, do u think i should go 1/2, 3/4, or full nutes on next change on thursday?

DrFever said:

this is hydro right are you useing any H202 i woould add some to add some 02 to your water could your res be stagnent how do roots look like ???? when i usally see a plant looking like that it tells me one thing over watering is there any leafs changing light yellowish ??? whats your Ph @

Click to expand...

i dnt think my res is stagnant only cuz i got a circ pump inside also 2 airstones, and i change water every week. ph is 5.6-6.0 at any given moment. new growth was looking a tad yellow but it seems to be greener since today( 3 days after i flushed). im watering 3 times a day for 30 min each time (top feed drip).

DrFever said:

this is hydro right are you useing any H202 i woould add some to add some 02 to your water could your res be stagnent how do roots look like ???? when i usally see a plant looking like that it tells me one thing over watering is there any leafs changing light yellowish ??? whats your Ph @

Click to expand...

i was adding h2o2 periodically but i stopped cuz i didnt want it to kill the great white mycorrazite

you get your heat issue dealt with?

ya the room temp is good. the only heat issue is that i must run ac w light on and never turn it off(ac). but ya temp is around 70s and im still getting "heat looking stress" but it cant be that

Hmmm, It seems with outside temps being 77 or lower you really should be able control it better. What time of day you going lights on?

gotigers0420 said:

Hmmm, It seems with outside temps being 77 or lower you really should be able control it better. What time of day you going lights on?

Click to expand...

i wish i lived where outside temps are 77. i live in arizona. its still in the 100s. but its the 1000w hps that creates the heat. and the heat gets outta control quick w the ac turned off. thats y i gotta run ac at all times when lights on. but w the ac on the temps stay in the low 70 or high 60s. thats y i dnt understand the heat stress symptoms. it cant be heat stress

apbx720 said:

i wish i lived where outside temps are 77. i live in arizona. its still in the 100s. but its the 1000w hps that creates the heat. and the heat gets outta control quick w the ac turned off. thats y i gotta run ac at all times when lights on. but w the ac on the temps stay in the low 70 or high 60s. thats y i dnt understand the heat stress symptoms. it cant be heat stress

Click to expand...

I thought in the other thread you had said the temps out of tent were 77ish. Either way hope you get it under control. I used to use one of the same AC units you use. I called r2d2. It was a POS tho. BTUs per dollar sucked. You should think about using a small window style unit and building a shelf for it outside fo tent and have it mounted as if it were in a window of the tent. Way more efficient. Those r2d2 units create more heat then they can rid of. Where you venting that thing to?

Ahh, with so little information, My guess would be space herpies. You need to give all the information possible. But with the photo I see yo9u are growing hydro. And I would GUESS you have rock-wool under the surface. Well if this is true, then you have been starving your plants. You do not feed plants for the first 3-5 weeks iun most soils because they come with time released nutrients. But I would bet your system has no time released nutrients. JUST A GUESS, because of lack of information.

Lord Dangly Bits said:

Ahh, with so little information, My guess would be space herpies. You need to give all the information possible. But with the photo I see yo9u are growing hydro. And I would GUESS you have rock-wool under the surface. Well if this is true, then you have been starving your plants. You do not feed plants for the first 3-5 weeks iun most soils because they come with time released nutrients. But I would bet your system has no time released nutrients. JUST A GUESS, because of lack of information.

Click to expand...

indoor grow tent(5'x5'x7'). using 1000w hps 3.5 feet away. plants are 3-4 weeks old. an AC unit keeps the temp from 68-73F with rh between 40-50%. ph is 5.6-6.0. top feed drip w 40gal res watering 3 times a day for 30 min each watering. hydroton clay pellets. 18/6 lighting. using 1/4 strength AN nutes, root excelerator, great white mycorrzide, and 130ppm of cal/mag+

sorry bout lack of info. i usually copy n paste the above paragraph but forgot this time. i hate when people dont give info. i was thinking that i was underfeeding but i kinda burn the lil ones last week then flushed for 2 days. also i just introduced a few clones on sunday and i was afraid to burn them, so i went for 1/4 nutes for 2nd week straight. the little ones look great now but a tad yellow. same w medium size.all are still growing good, just the big ones are really wilty. it sucks having a setup like mine where they all get the same amount of everything. im switching to buckets next crop. but anyways next h2o change is thursday. should i go w 1/2, 3/4, or full strength nutes?

gotigers0420 said:

I thought in the other thread you had said the temps out of tent were 77ish. Either way hope you get it under control. I used to use one of the same AC units you use. I called r2d2. It was a POS tho. BTUs per dollar sucked. You should think about using a small window style unit and building a shelf for it outside fo tent and have it mounted as if it were in a window of the tent. Way more efficient. Those r2d2 units create more heat then they can rid of. Where you venting that thing to?

Click to expand...

ya my bad. temps outside the temp iss 77 or lower. for some reason i thot u meant outside outside. durrr. i vent it out the window. it has a special vent that fits between sliding window and the window frame. pretty neat

So you only use the Hydroton? No Rockwool? Did you wash the Hydroton really well before you put it into use?
As for amount to feed. I always increase by about 10% until I get just a bit of burn on the tips. Then I back off about 5-10% of that, and record that amount and what strain and age it is. Different strains in different systems take different amounts of nutrients. This is why when ever someone says to feed your plants at such and such PPM, I always throw that info away.