Top Fin Bacteria Starter and Testing Strips

New Unopened Bacteria Starter. $9.99 retail… Opened Testing Strips, about 18 left out of 25. $16.99 retail… The bacteria starter contains nitrifying bacteria that improves water quality by reducing ammonia and nitrate. Use when changing the water, adding new fish, etc. Use the testing strips frequently to monitor water quality. See my other listing for 17 EF-S small element filter cartridges.