JBL LimCollect II (Snail Trap) filter Freshwater Aquariums should have a

Freshwater Aquariums should have a total ammonia value of less than 0

Multi-stage water pattern

it has a high-contrast demarcation line and an easily adjustable zero line with a readily accessible screw

After that

It removes aggressive chlorine and chloramine and quickly absorbs toxic heavy metals

JBL LimCollect II (Snail Trap) filter Freshwater Aquariums should have aFeatures, Catches unwanted snails, shrimps or crabs in the aquarium: chemical free snail trap with variable height limit of the inlet. Easy to use: fill the snail trap with food, insert rods to the desired height, place the snail trap in the aquarium overnight. Two small rods for the variable height limit: to prevent fish from entering unintentionally. Also suitable for catching shrimps or crabs. Water flow: no oxygen problems for fish caught