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i have a gallon of gh hardwater micro and i just got a ro unit so my water is at 0 ppm do i need to add cal mag? if so how much ?i have read everything from 1ml per gal to 10 ml per gal thanks for any help

81 plants that are about 2 foot tall each are 2 weeks from finish using the whole general hydroponics program ppm is at 1200 and they were at 1400 before using the moab. plants look under developed compared to last grow(only 24 plants and half are la comf others are black domina) tons of pistils...

i am finishing my first grow 25 plants did great want to go more plants so i can fill a 6x4 tray . next time i was gonna veg 2 ft because i thought bigger plant bigger yield my room would allow them to get 4 ft if they needed they are in rockwool in hydroton in 6 inch baskets how many...

does anyone know where to get critical mass seeds-mr nice that will send them to the usa?

does anyone know where to get critical mass seeds-mr nice that will ship to the usa?

i am 55 days into my first grow and my trichs ar still clear or atleast thats the way they look to me my friend that gave me the clones said 60 days and they would be ready but they are not cloudy or amber that i can tell i have been flushing for 9 days is this normal? how long does it take...

my fan leaves are dying buds look healthy as well as the leaves around the buds only 11 days in to 12 12 need some advice from experienced growers my girl is putting pics on for me should be up in a few minutes thank you for all the help this is my 1st grow room 6x6x8 light 1000 watt hps...

i am in my second week of flower my room is 6x6x8 6x4 tray 50gal res plants are in rockwool on clay pellets in 6 inch baskets 1000w hps i just got a 50lb co2 tank and regulater but i am exausting with a 440 cfm fan turned down using a regulater also Should i just leave it on the whole time if so...

i have three books and they all say that i should keep my plants at a different ph cannabis cultivation by mel thomas pg 46 says ph should be at 5.5 the best of ask ed by ed rosenthal pg 119 says 6.1 to 6.3 the cannabis grow bible by greg green says 5.2 to 6.3 Does anybody have a real answer...

i have three books and they all say that i should keep my plants at a different ph cannabis cultivation by mel thomas pg 46 says ph should be at 5.5 the best of ask ed by ed rosenthal pg 119 says 6.1 to 6.3 the cannabis grow bible by greg green says 5.2 to 6.3 Does anybody have a real answer...

1st grow fill and drian ebb and flow 6x6x8 room 1000 watt hps 440 cfm can fan carbon filter 6x4 tray 50 gal res im about to switch to 12/12 plants are about 10 inches 3 in rockwool cubes in baskets filled with clay pellets tray is also filled with clay pellets was watering every 4 hours 24...

1st grow fill and drian ebb and flow 6x6x8 room 1000 watt hps 440 cfm can fan carbon filter 6x4 tray 50 gal res im about to switch to 12/12 plants are about 10 inches 3 in rockwool cubes in baskets filled with clay pellets tray is also filled with clay pellets was watering every 4 hours 24...