i bought mine from aliexpress.could be that mine evaporated it was an open container in summer.my mistake but still the thing works.
roots will form all around it she will suck the water out of them :D
maybe you didnt prime it. when you first use it you have to put it deep in water and move the cable to relese all the air pockets. after that it should work. mine worked for a season. next season it was plugged. but 4 was 1$ soo it was worth it my plant made a white mass of roots around it. you...
sorry i forgot i was talking to a special person. if you cover the whole box with plants the air intake will focus on one corner. if then you put a fan that moves left right you will make the air move better in the whole box. air go wush plant go jeeeej