Velda introduces the I-Tronic a revolutionary product which tackles the algae problem with lasting results. The core of the I-Tronic consists of an anode made of a mineral copper alloy and a cathode of stainless steel. The operating unit, which is microprocessor controlled, generates electric pulses, as a result of which positively charged copper ions are released. Forming a natural killer of both fibrous and slimy algae.