Blue Thumb Handi-Foam Black Spray Foam - 24oz Supreme high-quality Matala filter material to

high-quality Matala filter material to these filters

Do not dilute

Buffers help prevent drop in alkalinity and pH when removing ammonia

promotes healthy aquatic life

Blue Thumb Handi-Foam Black Spray Foam - 24oz Supreme high-quality Matala filter material to24oz Professional Handi Foam Handi Foam black spray foam expands & seals gaps between rocks and the liner. This diverts water over the rocks, instead of beneath them. Contractors use it during professional installations to simplify waterfall construction. For use with Professional Foam Applicator Guns available in Steel or Gold We recommend Professional Foam Gun Cleaner PB1533