Agreed 100%. I wouldn't spray anything past within 3 -4 weeks of harvest. I like to follow up with a few foliar sprays of just water just before lights out "after the smoke has cleared and the rubble has been swept away." - Tenacious D
Everything was going so smoothly with my grow, then a week ago I noticed the dreaded little white spots on one plant. I turned over the leaves and found only two adult black mites and a few eggs. I haven't had fucking mites in over a year! I ran to the hydro shop and bought azamax, as I've used it with great success in the past. I think I went a little overboard with the dosage, and now my girls don't look as happy: a little leaf curling almost like nute burn. I only found two affected plants out of about a hundred, so I guess I panicked. I sprayed every plant heavily and even sprayed the top of the perlite in all my pots. Absolutely no sign of mites now, do you think rinsing some of the Azamax off by spraying with plain water would help? At low dosages, my girls used to love azamax looking shiny and healthy. Oh well, live and learn I guess...
Does anyone have the forumla to calculate how much H2O2 is needed if 50% strength cant be found. Say maybe 18% or 35%...I cant seem to calculate it, math must be rusty
If I recall 1.7 ml/L is the rate for 35% and 1.0 ml/L for 50% per Al's recommendation but I would wait to hear back from him personally. I Garn'tee he knows the math behind it lol.
If 1ml of 50% is recommended thats .5ml of h2o2. So take .5 and divide it by any percentage to get the ml.
So if its 18% it would be .5 divided by .18 to get 2.7ml
25% is .5 divided by .25 = 2ml
30% is .5 divided by .30 = 1.7ml
35% is .5 divided by .35 = 1.4ml
50% is .5 divided by .5 = 1ml
90% is .5 divided by .9 =.55ml
A few questions for the great Al,
My ppm stays the same throught a week and my res just loses water
When you top up with plain tapwater, does it effect the ppm levels at all? and if so, do you add back nutes to keep the desired ppm until your 2 week tank flush?
Ive heard too addback plain water with no nutes, but wouldn't this dilute your solution if its already at the correct ppm?
When my ph drops or raises by a point (5.9,5.7) should I adjust immedietly back to the suggested 5.8?
Ive left the lid off my res and been adding h202 at the reccomended doses, but I still seam to get white bubble slime floating and sticking to pumps by the end of week 1.
The 200ppm tap I am running contains high traces of calcium, and adding 1/4 tspn epsom seems to help with the purpleing of stems. Is it safe to add epsom at that rate before I add nutes to the desired strength? And do I sutract the starting ppm after I add epsom or before?
Try not to panic when applying miticides etc. Use the recommended dosage rate. Once you see any symptom of damage to the plants, it's usually permanent. Some 'organic' and 'natural' insecticides use oils to suffocate bugs, which breathe through pores in their bodies. Problem is, leaves work the same way. Plug leaf stomata & you will kill the leaf.
Thanks Al. Yeah, the ladies are looking better now, especially the new growth, and buds are forming nicely. Azamax directions say that in can be used in the rez and plants will safely take it up through the roots to be bug-free, but I don't know if it's compatible with h202 and I can't find the info anywhere. What do you think, Al? I know that azamax is a concentrated neem-oil derivative. On an unrelated topic, why do the ladies smell so strong immediately after lights off?
christ this is too much for my stoned tired brain right now, ill check back later, even though im all soil, i like to know all the options, and how to correctly execute them
Soil is far too much work. Messy, heavy, low production compared to even flood & drain hydroponics.
To each their own really.... But with a well formulated soil mix its quite simple, just add waterWith the right strains I can knock down 16-18 zips in a 4 x 4 space per month. SOMEDAY I will use your method, which I very much look forward to, I just don't have the time to maintain 4 reservoirs compared to a just add water approach with a soil mix. Or at least the change scares the hell out of me lol. I REALLY want to get a small tray running this winter if time permits to get my feet wet with your method, probably start with a small tray with 5 or 6 1 liter pots and see if I can't dial it in.
I honestly adopted some of your method to set up my perpetual though, 4 plants roughly 8 week strains, every 2 weeks one plant comes out and another one goes in averaging about 4 zips per plant.