Second Mated Pair

Yet more spawning in my 125 gallon aquarium. The Scalare Angelfish again, but this time a new pair has formed. The marbled Angel has turned out to be a male, and the second zebra stripped Angel is also a female (maybe twins? :) ). These two have chosen the right side of the tank for the spawning, opposite of the other mated pair. They at first started to clean off the leaf of a sword for their spawn site, but changed their minds and started to clean the filter intake tube. Shortly after, the female laid her eggs. There is a distict difference this time though, the eggs are more of a yellow color compared to the others spawn which was more of a white. I’m wondering if this means one of the pairs is failing to fertilize the eggs, or if it is just an issue of different lighting. The filter intake tube is in a corner and a little darker than the other spawn site on the left side of the tank. Continue reading

New Sponge Filters

Today I upgraded, at least I hope to have upgraded, my 20 gallon tank from the TopFin 20 HOB to an Azoo Sponge Filter (#9). I’m using the Whisper 20 gallon air pump to go with it.

First impressions? I think it actually creates more of a current than the HOB did. The debris I kicked up when replanting some stem plants that got loose there were bits and pieces floating around in the water so I got a good view of the current. It doesn’t move as much water, but it looks to be moving water in a larger area than the HOB did. It makes a lot of bubbles too… more than I expected. I plan on replacing the HOB in the 10 gallon also because it is hardly pumping any water anymore (impeller problems) but I misjudged the amount of airline tubing I needed and didn’t get enough. Hopefully with that sponge filter (Azoo #11) on the same airpump will limit the bubbles a little in the 20 gallon.

Sponge Filters are not quiet by any means. The air pumps make a loud hum (in my opinion) and then their is the sound of the bubbles themselves. I’m slightly concerned on the whole CO2 issue, where surface disturbance drives out CO2 which the plants greatly need in a natural tank. But, a HOB isn’t exactly gentle on the surface either. Time will tell!