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hi bought this meter came from hong kong. its the usual one , pen shaped PH-009. Came with a little screwdriver and two satchetsa ph 6.86 and a ph 4.00. the instructions a worse than useless. i saw some vids on youtube that were totally pointless. so can some one please step me through the...

hi. i am having problems with the food. when i feed i notice some yellowing the next day . i know this is prob due to over feeding. but i dont really think i am giving too much so here goes under a 600 watt hps thirty plants in 4 litre pots i am using rhizotonic biogrow supergrow all mixed...

ok feed once per week. is the correct ph 5.5 thats what i was told but would like it double confirmed.

sorry cant get any pics. but they havn't got any worse. i pruned off the withered leaves of some. and they have turned a spotted yellow in places. i reckon the yellowing is due to feeding. but i havnt over fed. so i dont know. any ideas

hi i am doing my first grow indoors in pots . started seedlings on two cfl bulps and after two weeks moved onto one hps 600watt. all fine and dandy was feeding nutrients at less than half the rec. dose and alternating with water all controlled ph 5.5 all growing very well indeed. moved to...