I use Classic Jacks 20 20 20 in veg in flower I use calcium nitrate once a week on all 1/2 tsp per gal and on any plant that looks hungry, plus Jacks Blossom booster and epsom salts 1/4 tsp per gallon of water every watering. I was getting too much nitrogen using cal nit the whole bloom cycle so I dialed it back slightly. If they look too green I skip cal nit that week. I don't have to skip often. The Jacks lasts me a full year. The bloom lasts about 9 months and I water 48 plants a time. Takes 10 gal of water every 2-3 days. Its starting to warm up my grow room gets above 30c already. Soon it will be every day the hotter it is the more they drink. The last 2 weeks I use water only. I do not ph anything ever. I have never had a problem with Jacks. I may try the Jacks professional one day. It’s a larger quantity so it will cost more. I pay 27-32 bucks for the Jacks. I have been using it almost 2 years i have bought only 2 of each and I perpetual grow always have babies going for the next round. It the best thing I have found. Better than Fox farms and better than the one with the gorilla head on it oh yeah advanced nutrients and half the price and a lasts 4 times longer. Win win they have them on AmazonI buy the 4 pound tub
