ricky_simples
In Bloom
Yesterday a lightbulb went off in my head. I'm almost a bit embarrassed to share, but for the betterment of the growing community, here's what not to do.
If you're a Jacks 321 grower, do not use scolding hot water to speed up the nutrients dissolving in water.
Long story short, I was seeing Mg deficiencies in these new plants. I was having those same issues with rockwool.... I couldn't seem to put my finger on it. I gave it some thought and the very last thing I could think of was the hot water playing a role. About a year ago I bought an electric kettle and have been using that to get the water to an almost boiling temperature to speed up the nutrients dissolving. I never figured it was the culprit. But looking back at the timeline, shortly afterwards I remember augmenting with Calimagic and chalked it up as the lights being LED and causing it, or the plants were just hungry.
But this time what I'm seeing is the new growth always starts out looking perfect, followed by those leaves fading out and becoming discolored. I believe Mg is mobile so this would make sense. If it was a Ca issue I believe the new growth would be more discolored to begin with, rather than starting green then fading.
I got on the phone yesterday and talked to a representative from JR Peters. I asked her if this would play a role. Her answer was a quick 'yes'. She also said the water temperature shouldn't exceed 77-78 degrees F when mixing the 5-12-26.
So I rushed home from work at the end of the day and immediately dumped the reservoir and mixed up a new batch of nutrients and got to work. Uppotted the GG4 and gave the others a good watering with at least 25% runoff. They're only two weeks old so I'm confident that they'll rebound. I'll probably give them some recharge later this week for a little microbe boost.
So yeah, don't use hot water because it'll fuck up your plants and make you feel dumb. I seriously thought I forgot how to grow for a while. But this gives me a confidence boost because the timeline matches perfectly. I'm actually not as hesitant to try rockwool again knowing this information.
If you're a Jacks 321 grower, do not use scolding hot water to speed up the nutrients dissolving in water.
Long story short, I was seeing Mg deficiencies in these new plants. I was having those same issues with rockwool.... I couldn't seem to put my finger on it. I gave it some thought and the very last thing I could think of was the hot water playing a role. About a year ago I bought an electric kettle and have been using that to get the water to an almost boiling temperature to speed up the nutrients dissolving. I never figured it was the culprit. But looking back at the timeline, shortly afterwards I remember augmenting with Calimagic and chalked it up as the lights being LED and causing it, or the plants were just hungry.
But this time what I'm seeing is the new growth always starts out looking perfect, followed by those leaves fading out and becoming discolored. I believe Mg is mobile so this would make sense. If it was a Ca issue I believe the new growth would be more discolored to begin with, rather than starting green then fading.
I got on the phone yesterday and talked to a representative from JR Peters. I asked her if this would play a role. Her answer was a quick 'yes'. She also said the water temperature shouldn't exceed 77-78 degrees F when mixing the 5-12-26.
So I rushed home from work at the end of the day and immediately dumped the reservoir and mixed up a new batch of nutrients and got to work. Uppotted the GG4 and gave the others a good watering with at least 25% runoff. They're only two weeks old so I'm confident that they'll rebound. I'll probably give them some recharge later this week for a little microbe boost.
So yeah, don't use hot water because it'll fuck up your plants and make you feel dumb. I seriously thought I forgot how to grow for a while. But this gives me a confidence boost because the timeline matches perfectly. I'm actually not as hesitant to try rockwool again knowing this information.