Back again. Is this nute burn or a deficiency?

Hey guys. Sorry to keep pestering you, I'm just trying to get the hang of this. The leaf on the right is from old growth back when I messed up and had no means of tracking things, but there are some spots forming on newer growth, and also the REALLY new growth seems to have yellow tips. This is probably nute burn, right?

PPM is only 389 at the moment, so I'm not going crazy with it. pH is hovering around 5.91.

Thoughts? If it is nute burn, should I just wait it out since it's not all that bad? 389 doesn't seem that bad.

Hi Azraelstrom,

If you are only at 389 ppm, I would say it is the opposite. This is probably a Deficency. What kind? Who cares, just mix up some more nutes and try to get the ppm to 600. Honestly your plants look overall really healthy. Not spectacular or anything, but certainly nothing to be super concerned over. Hope this helps and good luck!

-Grim

Looks like P&k def.

Also a some cal/mag


Grims on point

Alright, I'll definitely add more nutes.

Should I buy separate cal/mag or should Hydro Floria Trio cover all bases? I know Bloom has at least Mag.

In my opinion, most 2 or 3 part nutes are fine by themselves and don't NEED additional supplements (but the supplements definitely help if used correctly). However, if you are using RO as I do, than I do recommend a calmag supplement. Best thing you can do is read the nute labels. Do they include calcium and magnesium? If so, you probably don't need an additional supplement unless you want to go above and beyond.

-Grim

grimzuchini said:

In my opinion, most 2 or 3 part nutes are fine by themselves and don't NEED additional supplements (but the supplements definitely help if used correctly). However, if you are using RO as I do, than I do recommend a calmag supplement. Best thing you can do is read the nute labels. Do they include calcium and magnesium? If so, you probably don't need an additional supplement unless you want to go above and beyond.

-Grim

Click to expand...

I'm using tap water, as it's all I have consistent access to without breaking the bank. Luckily my tap is about 90-100 PPM, which is pretty good for most municipal water supplies.

As a separate question, my pH keeps going down just about every time I check the water. I have to constantly add more pH Up. Is there a reason for this?

Yeah that's some good tap water! I say use tap if you can. My tap is 320 ppm :'( and the chlorine/chloramine content is really high. I was able to buy an RO kit offline for only 70 bucks and it's been the best deal ever.

Why does the ph continue to fall? Well it could be a number of things, typically any aeration will do this over time, and if a plant is drinking more water than nutes it will fall. Sometimes nutes have buffers in them to acidify water slightly. This could also be the reason. Given your situation in still scratching my head a bit though. Maybe someone else can chime in with more info.

-Grim

Thanks for all the help. I'm upping my PPM right now.

I don't mind that the pH moves, really, since it allows me to bring it to like 6.2 and I know it'll drop down to 5.7, thus getting the entire pH range covered. I'm just curious as to why it's doing it. A period of 8-10 hours and it'll drop .5 or more.

I agree, it's definitely a quick swing. Maybe large temperature fluctuations?

That's possible overnight, since I have the light timed to be off the same general time I'm sleeping. And I'm also lowering the temp once in a while with two frozen waterbottles to prevent root rot(Temp in the res was getting 73°+ at times. No bueno.

I just heard that temp fluctuations can do weird things to the ph but can't confirm with personal experience. Sounds like that is probable with your situation. Hopefully someone else just chimes in.

But you are totally right to try and keep those res temps down. Root rot blows!

-Grim