hydro grow tips of leaves turning down

[buddymag00]

only very tips - no yellowing . suspect it may be over ferting so i have diluted the ph balanced nutrients . my first hydro grow . have i made the right judgment? the 2 lst,d plants look very healthy colour wise. any suggestions or corrections appreciated. i mean to be cautious as i have wonderful expectations for my little girls .lol.



sorry for the bad photos ! little bush is about 12" tall

 

[Brother_Monk]

That sometimes happens to me when I give 'em too much N in flower.
What's your RH?

 

[buddymag00]

excuse my ingnorance but what is rh or did u mean ph ?

 

[Brother_Monk]

No problem man, RH=Relative Humidity. The reason I ask, is because they do not seem to be stressed from over nutrients. They look fine. A little curl usually means Rh is not optimal. Or heat is a little high. 60-80% RH is good for veg. I would stay below 50% in flower, to be safe. But usually, that ramhorn effect is because of too much N during flower. But as you are not in flower yet, I'm guessing Rh or heat. Knowing more of your setup would help if you ever have a serious problem. The link in my sig may help if you ever need it.

Peace
BM

 

[buddymag00]

thanks brother. i dont have a ppm meter as i am scrogging 2 plants and feel the e130 for the ec meter is a little steep maybe for next grow. i have been nuting from bottle diretions with dutch formula and prob upped to full veg strenght a little early. i have a fan that blows mostly on the bulb and hood but does blow across onto plants as well. i keep the ph between 5.8 and 6.4. i have a very powerful in line fan with carbon filter and th light is about 21" away from plants.it is quite cold(winter air bieng fed through passive vent at bottom.) how do u control rh?

is it possible it could be too cold?

 

[Brother_Monk]

Relative humidity is usually controlled with adequate ventilation. But it sounds like you have that locked down. I wouldn't worry about it. What is your temps with the lights on and also when the light is off please?

I would back off of the nutes just a little. It could be the beginning of a nute burn. I'm not sure 100% about this, as she is looking pretty healthy otherwise. If a little leaf curl is all you are worried about, you should be in good shape by the time you are ready to put them into flower.

Seeing as this is a hydro grow, you should not let your rez temps fall below 60F* Temp fluctuations in the rez can do crazy things to plants. 55F* is extreme, but 60F* should be ideal. My rez temps usually hover around 70F*.

Peace
BM

 

[buddymag00]

thanks brother monk this is very helpful , however i am still a little slow on distinctions. when u say rez temps , do u mean resident temps or resevoir temps? if it is the resevoir that would be the cold weather at lights off with no heating in grow space. shoul i buy a heat mat for underneath the res. or introduce some heat to the space, if so what type of heater would be best . thanks for your help bro! i have thrown in some wet blankets and it seems to have done something, i have also changed the water and only 1/6 strenght nutes which i will top up in couple of days (keeping an eye on ph) also will buy thermometer and find out whats goin on lol , i come from a place where the weather is described as cool temperate oceanic.think heat could def be the prob or fluctuation because 600 w in a small 4'x4' space creates heat!

then very cold at lights off!

 

[buddymag00]

i will post more pics soon to let you see the shape your good advise has taken lol

 

[Brother_Monk]

Yeah man...high temp swings aren't good. Try keeping daytime temps below 90*F, and night time temps above 60*F. Those are the extremes. Above and below that, you are asking for trouble. Something to shoot for should be keeping it steady between 70*F-80*F. And by rez temps...lol, I mean reservoir temperature.

If you don't have a ppm meter, it's ok. Just try to keep your ph steady at 5.8-6.0 You can let it drop a little while they are drinking and eating. But don't let it get too far down. How often do you check?

Peace
BM

 

[buddymag00]

i check every day ,twice if i want to see how the plants respond to nutrients . i use tap water which i let lie to evapourate chlorine. the ph of water is between 7.3 and 7.8 . so i usually take it down in fact i only stock ph down. i have sorted the prob with the heat by fixing my gas boiler lol. presume leaving bowl of water over the rad would be a good idea for humidity ? i had said my plants had responded well but they didnt look good today so i took my finger out n fixed heating. hopefuly this should be ok . thanks , bro!

 

[20kw dreams]

Could be some specific toxicity, maybe chlorine? Just a guess really.

I wouldn't run at full strength. Using meters, I have found my ladies run best at 2/3 strength at that size. I would run them lower, and wait until you get a def to bump it, or opposire, burn them a little them back it off 1/4 strength. In my book though, it is better to get a def then a nute lock up or burn,

Peace out

 

[buddymag00]

thanks 20kw i have been using this approach since i burned them a little at the start. waiting for my ladies to finish their beauty sleep so i can check did the heat help.still running bout3/5 nutes

 

[buddymag00]

at last !!!

at last !!!

:friends: just had a look . wow ! big improvment. leaves all raised up to god after lights off , new growth looks good , even big improvment in affected leaves. thanks brother monk , i hink the res fluctuation was probthe main prob. will let you know how it faires out for me, again thanks for help and please keep an eye on this thread as i may need more inspiration .

 

[buddymag00]

failed to mention till this late stage !

failed to mention till this late stage !

oh its 2 sour nl x neville haze 10-12weeks flower from female seeds

 

[buddymag00]

i have a big space to grow these 2 lstd plants how long should i wait till i put them in flower ?



found it difficult to lst these plants as the stem was so thick n the plant so bushy at a very low height , i bent a main stem n had to let off the restraint to let it recover. I germinated the seeds on jan 5th so the plants are 35 days from seed. should i top as well as lst? how can i get the most from the space ? maybe this question is for a different forum but i value current correspondence so ill proceed n pick your brains if i may. i have done plenty of research in this matter but i feel most people would have put more than 2 plants under 600w in nearly 5x5 cab.

 

[Brother_Monk]

You must spread some Reputation around before giving it to buddymag00 again.

 

[Guest]

There is a saying "praying for magnesium" are they praying????????

 

[buddymag00]

There is a saying "praying for magnesium" are they praying????????

they arent actually clasped upwards ,just started to raise out of the wilting leaf-curl. just turn of phrase as i was happt to see them recover. thanks for stopping by cigars n ill rem the little saying!

 

[buddymag00]

since heat has been restored the plants have been happy . topped , ready to flip for flower in one week ! alls well that ends well .(touch wood)

 

[buddymag00]

bump ! its cold in europe at mo. as heat of res was prob ill keep this up for little while till spring is good to us n warm our cabs during lights off!