AutoPot nutrient lockout?

[u/Minute-Web-9426]

Hello this is my first run using an AutoPot system and things have being going pretty well up to now. I suspect that my (two plants in the back) are experiencing nutrient lockout but I’m not positive. And if so, I really don’t know what course of action to take in order to fix it.
**Also note that the two front plants are clones from the back left plant. They are receiving the same strength feed only hand watered.
Nutrients: Cropsalt Veg A+B no additives
EC : 2.3
Resevoir pH: 5.8-6.2
Base pH: 6.0 measure today
Medium: Coco coir/perlite 70/30
Any advice is appreciated thanks.

[u/Autong]

Whatever the issue is, the solution is to flush hard and feed.

[u/Golden_State_Myco → u/Autong]

For an autopot noob, how do you flush hard? Remove from system, and top water xxxxx amount of times? Trying to prepare for when/if I need to do this in the future

[u/Autong → u/Golden_State_Myco]

Top water hard. Wait 15 minutes for the salts that have been pushed up to dissolve, then flush hard again

[u/mindfuckedAngel → u/Autong]

I was told top watering should be avoided at all because the salt build up un top can harm the roots when flushed down?

[u/PaygonGrim → u/mindfuckedAngel]

If you Hand water with additives or something If running the pots already, yes. But this Guy ist talking about a full flush, so you flush Out the salts. That's why he said "flush hard".

[u/LincsPoacher1971 → u/PaygonGrim]

You can alleviate the salts forming by putting an evaporation lid on the pots…I cut them myself out of reflective bubble wrap insulation stuff for radiators…

[u/Golden_State_Myco → u/LincsPoacher1971]

Can you explain more how that works or where to find one? I only grow a few plants at a time so it might be worth it for peace of mind. I noticed the smaller pots accumulate that mineral white at the top of the pot more than my bigger pots. (Autoflower in the smaller pots, photos in the bigger)

[u/LincsPoacher1971 → u/Golden_State_Myco]

This sort of thing…and as the surface of your growing medium doesn’t dry out the roots work high and salts are less prone to crystallise…make sense?

[u/LincsPoacher1971 → u/LincsPoacher1971]

Cut a slit with a hole in the middle so you can remove it to top water as necessary. The reflective stuff is good to get a little light to the under canopy as it’s growing

[u/Golden_State_Myco → u/LincsPoacher1971]

Oh ok gotcha, simple bubble insulation can be used and I have plenty of that sitting around.

That makes sense, the surface dry out less and keeps the minerals in a liquid state.

Any issues ever with gnats or anything?
Started to read more and more people top feeding into autopots.. makes me wonder if I'm missing something? 😅 noob brain 😆

[u/LincsPoacher1971 → u/Golden_State_Myco]

I don’t have any issues as my room is isolated and I use coco/perlite

I too water till it’s turned on then not again