Critical #47 seedling (day8)

hwello everyone this will be my first attempt at hydro.
i have spent/ dedicated the past few months hitting the books, now i think it time to try my thumb.
worst comes to worst i gain some experience and knowledge along the way.
any who i have 2 fem seeds that are in their own bucket sys. (1) unknwn gen. (fem seeds co.) & (1) critical #47 (positronics)
everything was going alright until yesterday morning. found c#47's cotyledon leafs starting to burn. i checked the ph and it read 6.0, so i lowered it to 5.8 using GH up&down. the ppm read at 005 (5). water temp is 85-87F.
which i believe may be my problem but it just doenst make sense because my other lady is in the same room & she is doing perfectly fine. i also havent begun feeding yet.. not till day 21. (just incase some one tries to recommend I feed)

im in need of some advice..
thanks in advance, namaste.
AA

also i placed my clean fingers in the water and it felt slippery.. i dont know how to explain it. but the texture of the water has mosdef. changed.. should i change the res? its only been a week. pure ph adjusted distilled (005ppm)

Pics would help, but by the sound of it since you have a ppm of 5 you are using distilled or RO water? If thats the case you need to get Cal/mag. There isn't any food in the water for them. My seedlings are around your age and my RO water has a reading of 175ppm after i added GH CALiMAGic and superthrive.

Just saw the pic.... Dude she looks fine, those cotyledon[FONT=Arial, Helvetica, sans-serif] always die off eventually. But still, get cal/mag![/FONT]

thanks for the insight.

But really? thats it?
i guess it does make sense. i just always thought during the seedling stage they needed little to none; nute wise.
but i will mos def pick up some cal/mag& superthrive from my local hydro store.
thanks Turm. foreal.

Oh, before you drift off back into the world at what ratio/measurements do i apply the nutes in? im using about 3 1/2 gallons per bucket.

Save yourself some money, and don't buy superthrive. It's not needed, and has done my grows no noticeable good. You don't need cal or mag until you start feeding. Don't wait until a certain day to feed, wait until your plant needs it. PH affects nutrient uptake; no nutes=no need to PH. As far as application, it depends on the nutes and strain; you'll have to feel that out. The safe start for most people seems to be 1/4 strength and work from there, it's worked for me. Your plant looks fine though, you don't need to mess with it right now honestly. If it ain't broke...

Tnx kip.
im so confused as of what to do..
i supposed i could go wiith the "trial & error" approach, taking both you & turms advice; seeing which one works best.

but the thing is how do you know when your plants are ready for a light feeding regimin?

August's Anemone said:

hwello everyone this will be my first attempt at hydro.
i have spent/ dedicated the past few months hitting the books, now i think it time to try my thumb.
worst comes to worst i gain some experience and knowledge along the way.
any who i have 2 fem seeds that are in their own bucket sys. (1) unknwn gen. (fem seeds co.) & (1) critical #47 (positronics)
everything was going alright until yesterday morning. found c#47's cotyledon leafs starting to burn. i checked the ph and it read 6.0, so i lowered it to 5.8 using GH up&down. the ppm read at 005 (5). water temp is 85-87F.
which i believe may be my problem but it just doenst make sense because my other lady is in the same room & she is doing perfectly fine. i also havent begun feeding yet.. not till day 21. (just incase some one tries to recommend I feed)

im in need of some advice..
thanks in advance, namaste.
AA

Click to expand...

your water temp should not be 85-87 F that is way too high you need your res to be around 65-73 f

Question why are you pH water that has no nutrients??? that would be another problem regular water should have pH of 7.0

blehhh.
im already messing up...

idi i thought you were supposed to start them in ph adjusted water.
i soaked the seeds in ph adjusted water even the rockwoolcubes. after the tap root was showing i transplanted the seedlings into the buckets. using 5" net pots keeping the water level about an inch below that way the roots can go searching for the aqua...weirdly critical #47 isnt showiing any signs of root growtfrom the net pot, compared to the unknown strain which has atleast 4-5 beautiful white roots reaching for the water. (ill post comparsion pics) how would one go about cooling his res?

You are suppose to pH the rockwool thats good. Air stones speed up evaporation that helps cool.

so what type of water should i be using? im not catching what your/saying here.. elaborate.

also, i already have 2 large airstones in each bucket.

I mean when you buy rockwool you are suppose to soak it with pH water. I think you should use nutrients pHed since you already were giving them P or K since thats what the GH stuff is made from. If the top of your res is black it could be collecting light and converting it to heat.

i see.
ill change out the res later tonight, adding alil less than 1/4th per gallon.
what should i get reading wise (ph&ppm) whats the ideal range?

also i have earth juice sugar peak "veg" 3-1-5
and earth juice catalyst 0.03-0.01-0.10
which one should i use?

im just afraid of burning her...

also should i be feeding even though i see no visible roots from the netpot. (day:9 now)

ph 5.6 ppm 200

hexthat said:

your water temp should not be 85-87 F that is way too high you need your res to be around 65-73 f

Question why are you pH water that has no nutrients??? that would be another problem regular water should have pH of 7.0

Click to expand...

Already said it once: PH means nothing until you're feeding.

kp do you recommend i leave it as is?
you said you wouldnt fix something that wasnt broken.

i mos def think my seedling needs more help than its recieving from its current environment.


on another note: why would one plant be begging for nutes if the other is not? C#47 has a ppm of 5, and the unknown genetics has a ppm of 7. not a big difference but when it comes to appearance C#47 looks burned on the cotyldon leaves

Its just eating them, most likely. That's not burn. Different strains feed at different levels, you can get one plant needing ferts earlier than another for that reason. You could feed now if you want, I've started light feedings at that size before. Just make sure to start low. You should try and hunt down a nute that's heavier in N, in the ratio (A 3-2-1 ratio in veg). I've found GH's maxigro and maxibloom are pretty solid. It has all the macros and micros, even cal and mag, good ratios, and I've never had the PH swing on me while using it for the last year. Grows good bud without all the bells and whistles and 2.2lbs is $15US, which treats several hundred gallons at a HIGH PPM.

i am at week 2 and between three trains i am between 400-600 ppm no signs of burn. It all depends on the strain, growing a strain once and then again is a good idea. This way you can learn the way the plant feeds. Keep notes. Keep ph around 5.6-5.8 and water temp 65F. If your having problems rooting into rockwool i have good success with using a wet paper towel with tap water in a ziplock till root tap shows then into a presoaked ph 6.0 rockwool cube with a touch of roots excelurator and have nice roots by week 2. Another key thing about ph is if you have ph that rises that means the plant is feeding and asking for more nutes, if your ph is dropping there is to much nutes and the plant is not liking it. If your ph is staying stable and your plant looks healthy your one lucky sob. Look for signs of plant problems in the leafs and stems, if there are no roots growing something is wrong. Do not foliar feed if your roots are not growing also. hope this helps a little good luck