I really do like the blumats. They are automatic but only for a finite amount of time without maintenance. They will keep your plants watered for weeks at a time once dailed in I still water by hand as needed but usually it’s because I got real baked and forgot about filling up the water bucket.
I did have problems at first because I really should be using a larger reservoir vessel for my grow but I found an easier solution:
Here is the blumat reservoir bucket:
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It feeds the carrots water as the soil moisture level dictates; and it works pretty well for using no power. As you can see it has a little stick with white tape in it indicating water level; it is glued to a patron cork. The lid has a hole cut out for a hose which you can’t see in the back.
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System is gravity fed so you must elevate the bucket which makes for about 5” of clearance in my situation. Kind of a bitch for me to fill it up every few days. If the bucket ever goes dry you must reset the whole system and bleed out the air again to get the drip flowing again. If you use fabric pots any runoff from improperly set carrot valves will just go on the floor. Root rot isn’t really a concern as long as you have a well draining mix. The drip is not always constant as the carrots regulate the flow somewhat when properly adjusted.
The problem I had was too many carrots for one 5 gal bucket; bone dry in 3 days. My easy lazy solution was to run a pump to a hose from a water source bucket:
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I can put it on a recycle timer to fill up a bit once per day if I plan to go away for a week or so but I usually just plug in the pump manually every few days to water all my plants. I have it split off to both the veg and bloom areas in my perpetual grow. There are currently 13 plants now being watered with virtually zero effort. Hope that helps.