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Grab yourself some down to earth lime add 3 table spoon(if using 5 gallon) to the top of the soil and work it in and water it in. Start a feeding regime. i don’t recommend the droplet ph testers, everyone sees color differently and that could make all the difference.

Cal/mag doesn’t burn but calcium can buildup to toxic levels causing lockouts and other problems. There is an order you need to mix nutrients, follow the manufacturer guidelines.

Sounds good, make sure you’re phing your solutions and adding cal/mag first and stirring well before adding anything else.

Careful not to give to much cal/mag most tap water will have enough. you said you started to see tip burn after half dose, what nutrient line are you using? I’d continue with a feed water feed water schedule.

It does look hungry, can you tell me more about your feeding schedule?

right here… exactly what I said. Changing to many variables at one time could lead you into fixing a problem not knowing what corrected it, or causing others at the same time, this is exactly why I suggested to test before adding or doing anything. It’s always good practice to eliminate...

Treat coco like hydro not soil, measure ec of runoff if it’s higher then you’re feeding its building up and needs to be fed less, if the runoff is less feed a little more until you see slight drops in numbers. Coco is very forgiving because you can water and correct problems multiple times a day.

Some more information would be helpful, medium, ph, feeding schedule/ec.

As previously mentioned, coco requires frequent watering of daily if not multiple times a day and watering to runoff, you can check your runoff ec to help dial in feeding requirements.

It will continue to stretch until it gets adequate lighting.

I can assure you that you have a ph problem.. I see manganese deficiency up top and Marcos down below… that soil should have plenty of trace minerals left at this point… most can run ffof with autos to harvest without adding nutrients. I will also bet if you test your runoff you are in the high...

I don’t recommend flushing, you will wash the nutrients and the PH buffers from the soil even more. my guess is it being peat based soil the ph is low and needs some lime to bring it back up and start a feeding regime.

I don’t think a flush is what he’s trying to accomplish, he has only fed 2 small doses, I don’t see a need to flush or rid anything from the soil yet.

What soil are you using? I’m assuming something preloaded like fox farms ocean forest. I would check the ph and ppm of your runoff everytime you water to just look for changes or problems. if you water with ph 6.5 in and 5.5 is coming out you know you have a problem you need to address before...

I would water to runoff and check runoff ph, everything points to a PH problem.

Can you water to runoff and check runoff ppm and ph? Or at least PH, ppm isn’t as critical in organic.

You have deficiencies from lack of nutrients, sorry it’s much more common to see problems from lockout, ph and toxicity so I always start troubleshooting there.

OK so explain to me exactly how you’re growing you say reservoir but I see soil? Are you using like an auto pot system? Can you give me more information to help you determine what’s going on? I have limited information here. When you said you’ve only fed a few times, is that an entire reservoir...

You said liquid, I assumed synthetic? If it’s organics, no salt, should not be an issue. Some organic products like seaweed extract, will contain high amounts of sodium, but need to be used pretty heavily to see these types of results. My suggestion would be back off on the nutrients.

Unfortunately brother that’s not a simple answer, a lot of great nutrients out there and what works for me might not work for you. kinda just gotta play around and see, someone else might be in the Midwest with super low humidity and (this) works for him, someone the north east in a basement...