Recent content by houdini1

OK, I live and learn. To my knowledge cold doesn't kill them but their reproduction drops to zero, so yeah, colder weather will help you a lot

Outside grow with spider mites ?? Now thats weird. 'Never seen a mite problem outdoors as natural predators eliminate them. If you've rotting vegetation around or near your plants, get rid of it, as well as anything else that might encourage these evil bastards. Indoors, despite what queenster...

Thanks cranker. I exhaust into a garage using the same rated fan.

My containers are regular green plastic garden buckets. The scum could be due to some salt residue since I feed my 3 feet plants with nutes - these were the sick plants I kept from the original batch to see how they would evolve. Now I have another container for the 'imported' water to feed my...

I'm a little suspicious about the water supply in my new place. It measures ok at 7.5 pH and 250ppm salts but I've noticed, after leaving the water standing in a bucket for 24 hours, that sometimes there seems to be a slight scum on the water surface. If I blow on the water surface, a hole...

Normally 2 feet for young plants under 1K of light is fine. Done it for years. I really don't think its the light but I AM using new reflectors (adjust-a-wings from Oz). Could these new reflectors be causing massive hotspots and bleaching my leaves ?? Now I'm really gettin paranoid:mrgreen:

I use the British-made EVOLUTION co2 controller, which has a co2 measurement probe and will automatically keep co2 levels at whatever you want. Cost ? I paid 800 british pounds for it. Expensive, yeah if you have a half-dozen plants. If you have a roomfull and you get faster growth and earlier...

Temps are 25 deg. C, humidity an average of 50%. Temps drop overnight on an 18/6 cycle but not much. Temps are controlled by A/C. Well mouse, whats left is the water. I'm importing water from a source I KNOW to be good and am now feeding this completely unadjusted to my young 'uns. Its pH is...

I've used co2 for a long time. For a room full of say 2 foot healthy vegging plants, they gobble up co2 in no time. If you were to shut off your fresh air supply to such a room (assuming you have no co2 supplementation), the co2 would be used up in a matter of hours.

I normally go to within a foot with a 1K light without a problem.

Thanks buddingbishop for that chart. As you can see 24" is not a problem (where the light was originally) and 48", where I backed off the light to, is not even on the chart !

Hey mouse. You really think 900-1000ppm CO2 is too high for young plants ? Then I'm up shit creek as that's the ppm of the fresh air where I am (or my co2 meter is on the blink).:cry: But think about it....the co2 ppm in your house is probably 1000ppm....

The light was about 2 feet from the plants. Thinking that that may have been a problem I backed it off to 4 feet. No improvement after 2 weeks.

3 x honeywell air circulating fans; 1 x 720m3/hr. inlet fan.

Indoors : Temps. of 25 deg. C., good air circulation, room well ventilated with fresh air, 1000w HPS. Young plants, 3rd. set of leaves, in good virgin Atami soil, watered with only ph adjusted water. Plants are chlorotic, stunted growth, poor root development. Moved one plant outdoors as a...