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  1. blakjak

    Ph problems

    Hello, hope you guys can help. Having trouble with some 3 week old autos now. Some girls leaves are starting to hook downwards and edges are cupping. So my tap water Ph is 8.5 naturally. As a test I watered one plant today with just plain tap water at 8.5. run off came out at ph6. That seems...
  2. blakjak

    Is this a magnesium deficiency?

    Would really appreciate some help with this. its day 30 of my girl scout cookie auto grow. Older fan leaves have rapidly started to yellow over the last few days. I fed them 1/4 does of plant magic magne-cal with 1.5ml/L a+b advanced nutrients sensi bloom ph perfect. soil is plagron light mix...
  3. blakjak

    Fan leaves yellowing fast. Help please.

    Ok so over the last week or so I've noticed my fan leaves on most of my plants start to yellow real fast. I know they should yellow towards harvest but I have almost another month of flowering so this is too soon. Also the top yellow leaf in the picture literally turned that yellow over night...
  4. blakjak

    Uk loft grow. Do I need to insulate ?

    Hi ROI, Just wondering what to do with regards to heat output from a loft grow. The loft is not insulated at all its just tiles but what I'm looking to do, depending on the measurements, is put either a 4x4 tent with a 600w in there or a 4x8 with 2 600's. First question is would the heat of the...
  5. blakjak

    Anyone know what's going on here ? Brown spots on leaves

    I'm having a hard time diagnosing this. I think it's rust spot fungus but I'm not sure. On my last grow this shit spread over most of the plants and got bad to the point leaves were pretty much all brown and dead on a few of my girls. My temps are 16-26c and humidity is between 30-70%, soil is...
  6. blakjak

    Brown spots on 19 day old seedlings. Problem??

    - soil grow (plant magic supreme) - sour diesel auto's - 1 100w vipar led about 8 inches from plant - 2 gallon pots - humidity 50%avg - 13c (55f) - 27c (80F) - light schedule 18/6 - using normal tap water, not fed them yet. I have other autos in the grow room as well which include blue...
  7. blakjak

    Expected yield with autos in 3 gallon pots ?

    Hi, Just finished a grow recently with blue mystic/afghan kush Ryder and northern lights autos in 1 gallon pots with 16w sq ft of light (led). Managed to pull 20g per plant. Lot of the threads I've read pretty pessimistic about auto quality and their yield but tbh I thought 20 g a plant was...
  8. blakjak

    How to maximize the yield in a 4x8 LED grow ?

    Hi guys just want some thoughts in this. I'm setting up a new grow in a 4x8 tent. I'm using 990w ( actual Wattage) vipar led lights. I want to do is use 32 autoflowers in one gallon pots. In my previous grow I managed to get 20g per plant on 12 plants in 1 gallon pots, with half this light per...
  9. blakjak

    Out of the country at harvest time

    Hi Riu, Got a little problem with my stealth grow atm. I'm growing 4 chronic plants in a stealth grow and I'm actually gonna be away when they are 8 weeks into flowering from the point I switched to 1212. Two are lst, and two are scrogged which are pretty much impossible to remove from the...
  10. blakjak

    Double light = double yield ??

    Hi riu crew, just thinking about my second grow. My last grow I grew 12 plants under 200w led lights and yield 20g per plant in 1 gallon pots. This grow I'm looking to double the light but realistically what will the 100% extra light yield?? Using the same 1 gallon pots. Appreciate any advice.
  11. blakjak

    Maximizing potential of a small grow room

    Hi RIO people, Just about to harvest my grow. I've got 12 autos in 1 gallon pots in my grow room atm and tbh I'l be happy to get 4z. Just thinking about my next grow and wondering how I can make the most of the space I got. The dimensions are H - 41" W - 47" L - 52" Really dunno what's...
  12. blakjak

    best uk based online suppliers ?

    Hi riu community, Looking for some input from anyone that's dealt with uk suppliers and can recommend a site. Also, I'm looking for a blockbuster light and it seems the only people that sell them in uk are them scamming bastards hg-hydroponics. Cheers chaps :peace:
  13. blakjak

    Whats the big deal with the blockbuster ?

    Hi people, Just pondering grow lights atm and would be grateful if anyone could enlighten me. Got couple of questions; 1. Is it worth getting an aircooled light ? I live in uk so it's not particularly hot most of the year although it is approaching summer:fire: , how much of a problem would...
  14. blakjak

    Why buy an expensive grow tent ?

    Just wondering what all the extra money for a good grow tent actually buys you. I've heard stories of peoples equipment crashing down on the plants. Clearly if this happens then its def worth getting a quality tent although there must be some quality budget tents. anyway here are a few ive been...
  15. blakjak

    deficiency in final stages of flowering, what action to take?

    Hi rollitup community, Just noticed a problem with a couple of my northern light autoflowers. They are just over 2 months old and look like they need chopping in about two weeks. I've noticed little rust spots on the top leaves which I'm pretty sure is a calcium deficiency. I think it's because...
  16. blakjak

    choosing a rental propert uk

    Hi people, just looking for advice on choosing a rental property in uk that I can set up a grow tent in. I'm not specifically renting it to grow in but I want 2 4x4 tents in one of the rooms. Just concerned about landlords wanting entry for whatever reason or tenants coming round plus other...
  17. blakjak

    complete set up or sepereate buy?

    Hi chaps, Just like some input on whether a complete set up would be ok or if it's worth getting the parts separately. Looking to get a 4x8 tent with 2 600w lights, soil grow. Any suggestions on a decent set up would be appreciated. I've got up to £800 to throw at the whole set up including...
  18. blakjak

    plant is dying please help!

    Hi guys, desperately need some help. Don't think this plant has long left if I don't sort the problem soon. Last week the plant had a yellowing bottom fan leaf and now most of the leaves on the plant are covered in brow spots and also slight yellow patches on leaves. I thought it was a potassium...
  19. blakjak

    Mananese deficiency ?

    just wondering whats going on with this tiny little Northern lights autoflower. its 5 weeks old and about 4" tall. it was started with 6 other northern lights auto's, all of which are a lot bigger. some as much as 4x the height. the plant seemed to be pretty healthy besides its size so i figured...
  20. blakjak

    expected yield

    Hi folks, just wondering if someone could give me a rough estimate on yield per plant. I know there's a lot of variables so I'l try to include as many as possible. Lights - vipar led 240w, says 100w usage not sure what that's about Strain - 7northern lights autos from nirvana, 1 afgan kush...
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