micronutrient overdose?

syphex

Member
I have just completed my second week of vegging. I have been using superthrive and growzilla. Two days ago I also bought some nitrozyme and earthjuice microblast, I added the microblast to the nutes and foilar fed the nitrozyme and added some ph up cuz it was around 6.0-6.5.

But now I see that earthjuice microblast is also just a micronutrient supplement like superthrive I guess. On the website it said "chelated nutrients are more readily available for uptake" so I must have confused it with humic/fulvic acids or the like. All doses were about half of recommended; but I feel I may have overdosed on the micro nutes?

The leaves have gone shiny and leathery, are curling upwards, and rust brown spots/stains are appearing on some of the first serrated (older) leaves. Is this just stress in response to the nitrozyme hormones? Or I better flush them soon? :leaf:

ps- last week I dripped some nutes on the young leaves; rust stains have appeared on leaves that didnt have early foilar burn, but may be a delayed reaction to this.
 
So I checked the runoff ph and it was very yellow - around 6.0 maybe lower even (hasent gone red yet). I've "flushed" with normal rainwater (ph is high around 7-8) for about 2L runoff for 6 plants in 9 litre pots with 50/50 soil/vermiculite mix.

But the runoff is still yellow like it hasent changed. Im confused because I've only fed twice in two weeks, and the ph of the nutes were raised to 6.5-7.0 (green color) before feeding. Is it possible that the ph of the nutes lowers after a while? (should I wait an hour and check the ph again before feeding?) I know this happens gradually in soil but not this fast??

Also leaves appear somewhat dry and shriveled upwards, amongst the rust stains. Im using a fan heater - might be drying them out but its positioned a meter away and they have seemed fine until now.

Im tempted to flush with high PH'd water in attempts to cull the runoff ph a bit, but im scared of overwatering and extreme ph fluctuations.
 
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