Hi people. I think i sussed it out.

A couple of weeks ago I had a problem with my plant in the flower room where the leaves were yellowing. It was an N def but I mis-diagnosed it at first with an Mg def. I couldn't get access to the web to ask advice so thinking it was Mg I made a foliar spray with some epsom salts and a bit of bloom fert.

I hate waste and as I had a bit of this (probably poisonous concentration) of spray, I gave all my plants a spray. I despair at my own stupidity sometimes.

The spray did nothing to the flowering plant. I asked on here and found out it was a N def. I applied a mild veg fert and the plant re-gained health. The leaves I sprayed earlier with the mg/bloom crap dropped off and I forgot i'd ever sprayed all my plants with it.

I was scratching my head over this prob because it looked so much like a soil ph issue but my ph was not that bad... 6.3 at the very least. I scoured the Marijuana Horticulture Medical Growers Bible by Jorge cervantes and found some clues.

<quote>

"Foliar spray concentration is cumulative. nutrients delivered via the foliage can cause a buildup of salts in and around the leaves. This is similar to the way the salts accumulate in the soil"


Do you think this is a possible cause for all this damage??

I sprayed all my plants (apart from the one in flower) with plain water today to try and rid them of any residual crap. Is this sufficient?
Wobster Reviewed by Wobster on . Please help me! - Power plant growing indoor - Biobizz all-mix soil with 30% perlite - Ph roughly 6.5 - Tap water with a few drops of vinegar to lower Ph - Plant about 3 months from seed - Baby-bio fertilizer at 5 drops per liter - Fertilized every other watering - 3 x 20w energy saving cfl 3 inches from plant - room temp about 72 degrees 24/7 - relative humidity unknown but it should be low Rating: 5