The SURF8x is the largest version of the SURF scrubbers, a series of floating surface upflow algae scrubbers with Green Grabber surfaces, and strings for saltwater, designed to reduce your glass cleaning and water changes while creating an environment for living micro-animals to grow inside the scrubber.
Both the SURF8 and the SURF8x combine the exact functionality of the SURF4 and the SURF4x units into one larger unit, and do so in about the same total space but with less air tubing and more floating stability than the two separate SURF4 / SURF4x units would provide. The LED lights on the SURF8 and SURF8x are exactly the same as (and can be swapped at any time with) the lights on a SURF4 / SURF4x, and since each light has a separate power supply, you can operate them on opposite photoperiods if you like. So, for those who have been seeking pH stability, the SURF8 / SURF8x is the first scrubber which will allow you to alternate the photoperiods without having to buy two separate scrubbers.
Compared to its sister model --the SURF8-- the SURF8x sees improvements in the form of eight additional LEDs, giving the SURF8x the ability to grow green hair algae when nutrients are high in the water, such as 0.2 ppm phosphate or higher.
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