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Thanks for the replies guys, i already have 2 yellow sticky traps out that have been there for about 3 weeks and not 1 thing on either, really have inspected closely for bugs and there is nothing, the PPM of my feed is around 570, 300ppm of nutrients added onto tap water ppm, ive just given one...

growing in 50/50 coco/perlite using a 600w MH I am using fairly hard tap water (270ppm) temps are 70 at night and 75 in day any help would be much appreciated! everything i do hasn't seemed to clear it up yet!

Dont worry i read the thread and also viewed the feedback you got

I'm sorry but im not going to go through all that information on venilation 101 when all im basically asking is if its ok to pull through one tube and blow through the other, im growing plants not building a space ship, i think ill go ahead and just put the fan infront of both hoods so it pulls...

Ah sorry, im european,588 m3/per hour is 346 CFM, intakes another thing, i have two 5" diameter fans and two available inlets at the bottom of the area, which at the moment are just open holes but as i say its not up and running yet, im just really focusing on getting that negative air pressure...

Had a massive revamp on my setup, haven't been able to test it out yet as my plants are not ready for flower just yet, but it will be: carbon filter->cooltube->fan->cooltube-> up chimney The cooltubes will have 600w HPS bulbs, The fan is upto 588 m3/hr, 6 inch diameter the grow area in...

That plant looks a little small to have been transplanted already, looks fairly healthy though... Have you been PHing your water?

Great description

Depends how far into flowering you are, fairly confident its a phosphorus issue, may have stunted growth and put you a little behind but if you fix the problem i'm sure you'll yield something.

http://31.media.tumblr.com/tumblr_luxecxAN221qhh1c2o1_500.jpg this is a very helpful chart! Could be a number of things that cause phosphorus to either get locked out or not have enough available, Give the coco a good flush with PH'd water and see how they respond, the over feeding may have...

Now i'm not a 100% certain as im not the most experienced grower, but looking at some of those leaves it could be a phosphorus deficiency. phosphorus can start to get locked out above a PH of 6.0 as far as im aware, i'd wait for a more experienced grower to answer, just my input as i had the...

This is what i did think, Luckily i have a few different types and some spare seeds to get cracking! Thanks for the input bro!

Hey guys, I've recently started my 2nd grow and some seedlings are doing fine but some of them have no other growth than the cotyledons, which are starting to show brown marks and growth has completely stopped. I did notice as soon as they popped through the coco that some of them looked...