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Hiya! I am also considering building a speaker cab using a 70w HPS, and am aware that the space issues will be hard to overcome... Having said that, there is evidence that it can be done, and done extremely well. If you have not already come across it, do a google search for "romantica turbo"...

Thanks for posting these! I really enjoyed reading them. I like your drawing style. Keep 'em coming! :)

250w HPS with ballast reflector and bulb for about £50: http://www.toolstation.com/shop/Lighting/Commercial+Lighting/Lowbay+Luminaire+250w+SON+Sodium/d220/sd2768/p52752 Or search toolstation for "lowbay"

I have a 250w HPS in a cooltube inside a 40x40x20 inch cab with a 500cfm centrifugal fan blowing the hot air out and my temps are still rarely below 22 Celcius. with the lights on its usually between 22 and 26 degrees C. Anything above 26 and the plants start to suffer... My guess is that you...

I was hoping to not use bioHeaven until I start flowering as its (relatively) pricey stuff, but clearly it needs some of that heavenly goodness! I guess thats what happens when you cut corners! And it would be useful for me to know the pH so I can tell if thats part of the problem... (its a...

Thanks again for all your help people! I'll give it some bioHeaven, see how it goes, and report back in a day or two. Are these damaged leaves likely to recover from this? And I'll get myself a decent pH meter!!! It helps to have the right tools for the job!

Wow! Thanks for the quick replies guys! Should I be adding bioheaven to the mix (thats all micro-nutrients isn't it?) Also the bio grow already has a good percentage of potassium (NPK 8-2-6) or should i find something else to use instead? And I think a pH meter will have to be my next purchase...

Howdy y'all! I have just noticed that the leaves at the very top of my vanilla kush have started turning grey and curling up. It is just over 4 weeks into veg, and I have LST'd it. I'm using biobizz lightmix, and at the last feed used 2ml per liter of bioGrow, PH'd at somewhere between 6 and...

I have a similar metal cabinet, and found that once the fan was running (I used a 5") ,the whole thing vibrated and rattled like crazy, making it way too loud for stealth. My advice would be to line the inside with sticky-backed sound deadening rubber matting like they use in cars. (Dynamat is...

Wow! Thanks for the quick replies folks! Straight up water it is then! I just wanted to check its not likely to all go pear-shaped in the final week!

Hello all! I have a Vanilla Kush about a week away from harvest. I have been using biobizz all-mix soil, and biobizz nutes (grow, bloom, topmax and bioheaven) Up until the week 8 of flowering, I had no problems at all. Then on one occasion during week 8, I stepped the bloom and topmax nutes...