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for some reason last week i decided a pH of 5.6 was the way to go and all of my plants quickly turned light yellow and any leaves remaining green were light colored as well. i put fresh 5.8 pH nutes in a few days ago and i'm still waiting to see some kind of change. these plants are all in some...

i had this in sick plants but it was suggested that it might be more appropriate in this forum... i'm trying to run a small ebb and flow perpetual system on a 3 week rotation cycle. i have 4, 3 week stations for flowering, one small veg box and a cloning room (covered shelf) all in a walk-in...

i've got a small closet grow and i'm getting humidity levels up to 70 percent. it feels really dry in there but that what's the gauge says. i can't afford 200 bucks for a dehumidifier, especially when i might have to spring for an air conditioner if i can't keep my temps down (using co2 hoping...

i flush my trays with neutral water each res. change and currently i'm setting up a 5 gallon bucket of neutral water under the tray and pumping it through the tray. i'm doing this twice and i use 3 gallons each time - total of 6 - to do the entire flush. i need to cut back water usage so i was...

I'm considering converting an old grow box into an enclosed drying rack with screen shelves. it would have a carbon filter attached to a computer fan drawing air out. Air intakes are at the bottom of the cabinet. are there any drawbacks to the screen method? i don't have a lot of space but i'm...

i have an ebb and flow system with a tray containing 4 small plants. i had a ppm level of 1100, flushed the tray with 6.0/4ppm water for an hour and replaced the nutrient tank with fresh 957ppm solution. now i just checked the ppm after a week (been lazy) and the ppm level is 1758. how is this...

I'm doing my first hydro grow and i set up my system with large reservoirs so that i could leave town and be assured my plants would be okay for two to three weeks max. while i was out of town. It's a pain to move around these big tanks (10 to 12 gallons so it may be relative) and this morning...

I've got a lot of yellowing leaves on some plants in their 4th week of flower. they look just like the pictures in the Indoor MJ Bible for nitrogen deficiency. the ppms were at 1600 though and i'm wondering why i would or even how i could have a nitrogen deficiency. the sensi bloom nutes have...

just wondering how others are keeping their nutes from settling out of solution? i have an airstone in one but i still have a little settling but tank stirrers are really expensive (at least the ones i found). thanks.

I was told by someone who seemed really knowledgeable that at the second to third week of flower i should trim off the bottom 2/3 of my plants when doing a SCROG grow. i saw a few posting here that said that pruning slows the plant way down. i was told by this guy that trimming would make the...

i've got 8 to 10 clones that have turned pretty yellow and have not rooted enough to grow through the rockwool plug to be seen. tonight they are supposed to be planted in large rockwool cubes and then put into a tray and into veg. i also have soaking, some great cuttings from the bottom of a...

I have is a 3' x 3' garden with three medium-sized cat litter boxes with four to eight 1 1/2 foot plants in each tray. Right now I'm using a 400 W lamp with an air cooled hood and a magnetic ballast. in my opinion, I don't think the 400 W lamp is providing enough light for plants around the...

i took a Stearlite container and built it into a bubble cloner by cutting out circles for net pots in the top and spraying the sides with black plastic-dip. i filled it 3/4 full, put two 12" air stones in it and hooked them up to a small-ish air pump and i barely get bubbles coming to the...

i let my plants get a little too big and now i have some nute burn, so i'm going to veg them longer, only exacerbating the problem. my solution was to plan on taking my cuttings from the upper branches instead of the lower and then just let the lower branches fill in my screen. sounds fool proof...

i looked up my leaf damage in Jorge Cervantes Indoor MJ book and it looks like i've got toxic salt build up. my leaves are dark green centers, fading out to yellow and then fully burned edges. i also had a high pH problem for a day or two where my ph got over 7.1 but now it's back to 5.6. my...

i'm about to start up my room (already using the grow side) but no matter how much i clean and vacuum i find a silverfish - 1/2 to 1" - somewhere in my room almost every day. i'm trying to keep my house as clean as possible but i live in an old house with plaster walls so i think they are in...

i have medium sized cat litter trays for my trays and i use 10 gallons in a res that holds up to 20 gal. i flood for 14 minutes with a 150 gph pump. then everything sits for 1.5 hours and i go again. too much? too little? i realize it's highly subjective so if it boils down to preference please...

i have a tray of plants that for some reason has one side that has grown tall and bushy and the other side has only grown to 3/4 the height of the taller half. is there anything i can do to encourage the one side to grow and stall the taller side. spray nutes? 24 hr light? (i'm now at 18 light/6...

just wondering if i should have an air stone to introduce oxygen into my hydro reservoir. i'm using an ebb and flow system with 20 gallon reservoirs. will the added oxygen change the chemistry of the nutrients? thanks.

i've been putting together my setup over a long period and when i built my home made trays i went to the hydro store and bought several pairs of drain and fill bulkheads. i built my trays and many months later, yesterday, i tested my system and my trays overflowed massively. both my fill and...