You have no items in your cart
Block 8 x 8 x 4
- Block 8 x 8 x 4 - MSRP $60.99
is backordered and will ship as soon as it is back in stock.
Ammonia, Nitrite and Nitrate Removal
Primarily designed to provide deep anaerobic zones for de-nitrification in passive systems.
Live rock substitute-popular among reef hobbyists as a substitute for live rock because it reduces nitrates more efficiently without harming the environment.
Use in sumps, stacked in extra-large filters.
add to order list
Choose your wishlist to be added
Copy wishlist link to share
We will notify you on events like Low stock, Restock, Price drop or general reminders so that you don’t miss the deal
See Product Details
Enter your discount code here
✔️ Discount code found, it will be applied at checkout.
Discount code cannot be applied to the cart.
Please provide a valid discount code.
Discount code cannot be combined with the offers applied to the cart.