Howdy,
For my pirayas, dinner means shredding fish fillet. No problem thanks to a clean-up crew and massive biofiltration. But the oil film is resilient. Especially catfish and salmon (favorite treat) leave droplets of fish oil on the surface. These droplets stay there for days, reducing gas exchange. Thus, I got a new toy:
Eheim Surface Extractor powered by a 2213. At first try, it works like a charm
Mini added to Monsters (2262 in the background)


from below

from above

HarleyK
For my pirayas, dinner means shredding fish fillet. No problem thanks to a clean-up crew and massive biofiltration. But the oil film is resilient. Especially catfish and salmon (favorite treat) leave droplets of fish oil on the surface. These droplets stay there for days, reducing gas exchange. Thus, I got a new toy:
Eheim Surface Extractor powered by a 2213. At first try, it works like a charm
Mini added to Monsters (2262 in the background)


from below

from above

HarleyK


