WTF!!!

[rastaman79]

6.1 at both ends,my res is only 25 litres and my tray sits on that,so theres not a lot of "stray" water if you know what I mean?

[all4me]

NTF should never be turned off for 6 hours, golden rule is no more than 30 minutes or not at all. The look of your plants is consistent with this problem. I hope you took care of this, if not, what is your reasoning for the 6 hours of exposed roots?

[rastaman79]

HI Allforme,the reason I run 6 hours off is that in previous grows Ive had probs associated with over watering,so I turned it off with lights off with no probs ever before,and it aint never turned out like this before!

[JeffersonBud]

NFT and aeroponics need to be left on like she said. WHy co2 in your res. they like o2 in the res.

[rastaman79]

Its a special type of co2,it bonds with the h2o and delivers co2 that way as opposed to in the air.Trust,this shit works,I and a few others have tried grows with and without this and had much better results with.

[stinkyattic]

When CO2 goes into a solution of H20 (aqueous solution) it goes into an equilibrium that includes the Carbonate ion (CO3) and carbonic acid. Where this equilibrium falls in terms of proportions of each depends on atmospheric pressure, pH, other components of the solution, temperature, and oxygenation.
As a water chemist I can tell you there is no 'special' kind of CO2; as there is no 'special' kind of table salt- different salts look different like their shape or even color, but sodium chloride is the same molecule no matter what the salt shaker it's in looks like. You know what I'm getting at?
You want to add CO2 to a grow, you really need to be adding it to the atmosphere instead, and if you are just after the carbon, add a non-polar form (=simple sugars) to the res instead of something so unusual.

[rastaman79]

Well impressed Stinky. So your saying stop adding it? Can you take a look at the tablets im on about tho please. No Mercy Supply

[sirruler]

could i ask what type of light you are using? clones are pretty resiliant but very delicate at an early age especially if they have small root balls. ive grown thousands of clones over the years and 600w seems a bit overkill for a 3 - 4 week clone IMHO. from my experience its best to use a light with lots of blue and red spectrum for a few weeks to help get the veg going and the root system then once they have got used to the light use something a little stronger. loking at the size of those clones they look far too young for a 600w. im not saying this is your actual problem but it sure maybe a contribution to it. ive also found that rushing clones into strong light before they are ready can effect the final results. hope everything works out for you and best of luck good buddy.

[JeffersonBud]

Buy yourself a co2 tank and regulator. You will be very impressed.

[rastaman79]

Buy yourself a co2 tank and regulator. You will be very impressed.

That shit dont come cheap in England Bruv.