How can I build a bypass filter for denitrification?
Hello, the construction principle is actually very easy:all you need is a chamber equipped with intake and an outlet connectors, which is filled with sera siporax Professional (0.5...
Frequently asked questions
How can I catch fish that cannot be caught with a net?
Hello, it is in many cases sufficient to use two nets:Use one net (usually the smaller one) for chasing the fish into the calmly held second net. This is rather successful after some...
How can I help a fish with unspecific symptoms?
Hello, without specific disease symptoms you will unfortunately not be able to do much more than put the fish into a separate tank, provide plenty of oxygen in the water (possibly...
How can I hibernate goldfish living in a pond indoors?
Hello, goldfish can hibernate in cold (4 - 6°C) water (in that case do not feed nor disturb them) Usually, temperatures inside the house (including the basement) are higher, so the...
How can I lower the iron level?
Hello, this is indeed the correct way if the high iron level is caused by fertilizing too much. You may simply carry out a water change for lowering the level immediately. In case...
How can I lower the KH value?
Hello, this is possible with pH lowering products such as sera pH/KH-minus, but also by sera super peat (blackpeat granulate). These products are necessarily based on acids...