Blagdon indoor feature pump 550i Simple coral This prevents the collection cup

This prevents the collection cup overflowing if the water level in the protein skimmer rises due to the sump water level suddenly increasing

It is especially good at against stubborn beard algae and brush algae (usually difficult to remove) as well as filamentous algae too

whereas "classic lime water as per Wilkens" only adds calcium

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Why measure nitrate

Blagdon indoor feature pump 550i Simple coral This prevents the collection cupProduct overview The Minipond feature pump is a fantastic range of very compact, yet high performance water feature pumps. They are ideal for outdoor water features, and include an integrated flow control and two hose fittings supplied in the box. Key features Water movement feature pump to run a water feature Economical compact design Adjustable flow 1 x Minipond feature pump~ 1 x 3 8 inch hose fitting~ 1 x 1 2 inch hose fitting