Your rigt, but I have also seen that sometimes its better and cheaper to get it from the shop. I can get oln ebay api 10 tabs for around £4. Is that norm price>?
When I bought mine, the API one's, I asked about them. The guy in the shop said use them and nothing else for three months then start with the liquid fert's.
I asked alot that day, it might be that I misunderstud in the barage of infomation. Does this seem right?