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Need a new 400w mh lamp, was looking at a few dual arc 10K and 20k spectrum lamps. Any one know if they're good for growing weed, they're normally used for gowing reefs in aquariums. They also are high in UVb

compared to smoking

Anybody here able to run sub 4 minute mile ? I'm down to 5.22 not great but not too bad either, i want to get below 5 by june

Anyone got any experience using this ? I want to use it as quick fix to a nitrogen def, but will it mess up the PH of my soil its high in sulfur and tends to mess with soil PH. Will this still happen even though i have dolomite lime added to stabilize PH ?

i making a soil mix but need to know how much of each amendment to add, here's what i got 10 large bags of soil 5kg box of blood and bone meal box of seaweed extract box of dolmite lime box of bat guano box of epsom salts 1 bag of worm castings 4 bags of perlite 1kg of...

good idea or bad idea ?

Setting up a new flower room and need help with ventilation to keep temps in check What size cfm of extract fan and intake fan Room Size 10'w x 15'l x 8'h Wattage 5 x 600w hps Was looking at 2 12" extractor fan both are 524cfm for extraction Is this enough to cool 5 x 600watts hps...

Which is the better yielder when grown in soil ?

How much lime should i add in grams when mixing my soil, per bag or per 3gal pot. Also, how long does it usually take for fine grade garden lime (powder) to break down and regulate PH of soil should i sprinkle some on soil and water in ?

got a free auto seed from attitude, question is should i leave it in my veg room under 600w MH 18hrs light till finish or transfer to flower room hps for last 4 wks, will yield suffer much with 12 hrs light

my place is being inspected first thing in the morning i gotta move EVERYTHING and have nowhere to put it. wtf am i gonna do :-(

how long after topping should i wait to switch to flower ?

recently changed electricity provider. i now have two different rates. night rate 12am - 9am. costs 70% less than day rate. My question is if i change light cycle 1 hr per night, would this affect the plants in flower and veg Room 1 in flower 1 week lights 7pm - 7am Room 2 in flower 7 weeks...

what strain ? how long veg ? hydroponics or soil ? topped, fimed, supercroped, lst ? how many watts ?

should i keep giving my mother plants nitrogen for fast growth or cut back on nitrogen because it will delay rooting in clones i cut 30 to 40 clones every two weeks plants are kept under 600w hps on 18/6

Barneys farm, Tangerine Dream Ceres seeds, Orange Bud Deleicous seeds, Critical Yumboldt G13 Labs, White Widow, Blueberry gum, Purple Haze, Gigabud. Out of these i have only smoked White Widow, Orange Bud and Purple Haze. Any info appreciated such as what are they like to clone, do they do...

what does it involve ? is it basically pics and info from start to finish ? i know it prolly a dumb question :) but u dont know till u ask !

should i cut above or below a node when taking a cutting

what will 170 grams wet weigh when dried and cured roughly ? would 60 or 70 grams be realistic or what ?

plant pollinated by hermie found one ripe mature seed in 3 plants so far harvesting torrow so prob find more Are these seeds gonna be hermie's or have a high risk of being hermie ? They were not self pollinated, is it even worth the time and effort to grow the out or just bin them ? Any advice...