None, IMO. General hydro has a newer one part out called "flora-nova". It's about 20/quart or 70/gallon. It makes monster tops in bucket systems. The thing with it is the fact that is is so concentrated, it takes a very small amount, very cost effective, it'll last forever if you got a small set-up. This is aimed at hydro though, which are you working with?
I really do not think that is a good idea bongzilla, you are going to have to find a new place to grow bro. You know that you could get your totally innocent parents in a lot of trouble right, try to find a spot outside or something bro. But please you need to have a little more respect then growing in your parents house behind their backs. I know this is not what you wanted to hear, but I am sorry man, I had to say it.
By no means are you being a prick you are giving very good responsible advice. I am going to be the prick.
Bongzilla last week a sticky and announcement was put into the coffee table. to be here you must agree to be at least 18 yrs. old. There will be no further discussions or even mention of minors or minors growing in there parents house. I am under the "assumption" that you are 18 yrs. old, but still live with your parents. Please refrain from any further mention of this subject.
No more references to growing in parents houses. Thank you.
Everyone if you haven't read the new guidlines please have a look over it. its a sticky at the top of the coffee table.