That is really a shame. I've been considering them and was excited to read the EC being so low.Running them now (8"), so far so good, but only a couple weeks in from sprout. They have a nice low profile if height is an issue. Not the most sturdy, but they are cheap enough to replace if they break. The corners and the bottoms where the mesh attaches to the walls are fairly fragile and breaks will happen there.
You'll need to place some mesh or something like coco mat or felt in the bottom before filling with coco, as their openings are large and let coco flow out first waterings.
The bottom posts raise the pots nicely off the bottom of the saucers or trays and make for really nice draining action. The coco bricks that are placed in the flora pots (if you use them) are high EC and need to be flushed or your young plants may suffer (the runoff EC was 1.4 when hydrated with 0.6, so had to do a thorough flush). Their claim that all u need to do is add nutrient solution to runoff then plant is BS...they definitely need to be flushed, so their florapot coco minibricks are not plug and play.