Deathtrap for neon, too strong current damaged water lettuce, cleaning performance Average Abandoned, too big.

I have this filter now used for a while and now he is coming off.
First complaint: On the back are slots through which the pump on the filter sponge passes water. A Neon, the unit behind the filter is sucked in and died. I had a missing and found out luckily on the Internet that the filter has this design flaw. With me in a slot in the other plant parts and clamped a dead neon, so that the slots were closed. Although this has saved the other Neons life, but the water quality was not conducive.
Second complaint: The filter blows out brutal what - small fish, which are caught in the outflow just so thrown by the pool. The vents must always be directed to the Beck glass. However, the resulting vortex sucks water lettuce on, holding him prisoner and tears him little by little, the leaves and roots from. Pity about the beautiful plants.
Third gripe: The internal structure. Two sponges bottom, top left and right two non-opening baskets substrate with almost nothing in it. Zeolite and activated carbon, it is best to throw out the same, because they make life difficult for Nitrobacter. Filter performance, well. There are better internal filters.
Fourth complaint: The filter is much too large, which may other less.
Conclusion: Complete the Gallery. I can not say it differently. I'm sorry.