even if it makes some effort, the aquarium to wait Duch the smaller opening, it is worthwhile for me definitely. It's great fun and relaxed life in the aquarium to look at, especially by the beautiful view from the top into the water. I now have the aquarium almost a year and am very satisfied. There are hardly any maintenance on. from time to time 25% water change, planting, filter cleaning, the discs remain clean, as there is no algae problems are. the water is always crystal clear. activated carbon filter should I use rarely, only when necessary. light and CO2 I control with switches.
the relatively small opening is of course a disadvantage for the maintenance, cable, tube-feeding, but on the other hand has a very nice einnblick which is crucial for me.
even the smallest shrimp, just hatched are not sucked into the filter, but there is a filter sponge that works well.