Heard they are difficult to dial in, and sensitive.lovley skimmers beautiful quality quietest on the market but $$$$
Thats a bummer.Lovely skimmer..only problem is getting spares as Aquarium depot no longer importing the vertex range..iv been looking for a spare impeller..looks like I'll have to import one directly
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That would be Royal ExclusiveThe little ive read about vertex skimmers they look like the Rolce Royce of skimmers