Find Reviews and Compare Prices for:       All ProductsOverflow Boxes     4.6 (4)   Add a review CPR CS90 Overflow Box   Continuous Siphon Overflow 1" Single Bulkhead, 600 gph by CPR Aquatic. Continuous Siphon Overflow: These pre-filters are the best way to move water from an aquarium to a filtration system without expensive modifications Have a question? Just Ask! Member Reviews Compare Prices Product Spec Send to a friend Set Price Alert Searched CPR CS90 Overflow Box in 150 stores, 2 results found Image Description   Store   Price CPR Aquatics CS90 Siphon Overflow If this item doesn't belong here, click Remove and help us keep our results accurate.   Amazon.com   2 Store Reviews   $97.99 Go to Store CPR CS90 Overflow Box If this item doesn't belong here, click Remove and help us keep our results accurate.   Amazon.com   2 Store Reviews   $100 Go to Store You can also search these stores   Find this product on eBay   eBay   5 Store Reviews   Search on eBay Are we missing a store? Let us know! Something wrong in this page? Let us know! Related products: More External Boxes Overflow Boxes Other Overflow Boxes internal use: spec483