Potassium deficiency

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Skaboi6977

Member
Hi , it's my first dwc grow , 2x2 fastberry auto from fastbuds , bigger ones are nearly 5 weeks old and I've been battling root rot on it for over 2 weeks , then I've used h202 and fingers crossed , no sign of it so far . But it stopped grow for 3 weeks , regardless girls started flowering , explosion of both root and leaves grow so far in last week or so . I know that propably the best thing to do would be just dump them , but I don't have a heart to do it ....
I'm keeping them in 26 l coolbox , ( b4 I had them in small containers with pH fluctuating like mad , don't even ask....) . I'm using an pH perfect , voodoo juice , b52 and hydroguard ( everything apart hydroguard at lower dosage then recommended) this morning pH at 6.0 EC 1150 , light schedule 20 /4 , why the bigger one is so pale ? I know I had deficiency earlier as I've been using nuts at 400 ppm ( my tap water is 88 ) , but few days ago I've adjusted them to 600 , what are they lacking ??? Small ones are 18 days old at pH 5.9 ppm 350 , one is looking droopy from very beginning which doesn't bother me much as it still grows not too bad , I've put root root cubes in coolbox 5 days ago . Any help highly appreciatedIMG_20200611_230237.jpg
 

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29menace

29menace

Well-Known Member
I run adv nutes Voodoo juice and Nirvana in Dwc. So do hundreds of others. I can't say anything about Voodoo juice and I'm not going down to look at the bottle but Nirvana is definitely organic.
 
29menace

29menace

Well-Known Member
Did you say Your water comes out the tap at 0.8ec? If so that is high and most young plants will burn with less than that. If your adding 400ppm on top of the 0.8ec that's your problem. Have you ever seen your EC drop? Does it rise overnight and pH drop drastically at the same time. If answers yes then change the tank and just use your tap water for 12 to 24hrs then add nutes at 100ppm first and see if the EC drops overnight.
 
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twistedwords

Well-Known Member
I will take a stab at this with limited info on this setup for you. In DWC you don't need any medium at all. Just use neoprene collars and build a deck for the collar to sit in. Next in DWC you need to keep those water temperatures down to no more than 72 degrees, 68 is ideal. Since you have Hydroguard that is Okay, but if you want better then get pondzyme and root rot is gone. If I were you just ditch DWc and go with Bato Buckets and save the hassle.
 
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