Brightwell Aquatics SpongeXCEL

Brightwell SpongExcel is an ionic silica supplement for marine systems supporting silica-using organisms such as sponges. It supplies a mineral resource rather than a complete diet; sponges still need suitable feeding and water movement.

Measure silica and consider existing sources before use. Make small, controlled additions and watch both sponge growth and diatoms, because a large silica addition can promote a diatom bloom. The manufacturer's approach increases dosing gradually and reduces or pauses it if diatoms become excessive. Follow the handling precautions for this alkaline solution.