Write a review Fountain Blocks help control algae growth in ornamental fish ponds. For containerized ponds and fountains only. Not recommended for use with live plants. SKU: 43084393 MFG: 16737 Shop more products by Tetra. SHARE Share on Facebook Tweet on Twitter Share on Google+ Pin on Pinterest Shipping charges calculated at checkout. Shipping not available to AK,AE,AA,AE,AE,AE,AP,FM,GU,HI,MH,MP,PW,PR,VI $8.61 Quantity In Stock Add to cart Request a Bulk Quote Thank you for your quote request. We will be in touch. DETAILS Description DESCRIPTION Highlights: Size: 0.3 Oz Helps control algae growth in ornamental fish ponds Not recommended for use with live plants Use one block for water volumes between 100 and 250 gallons FEATURES MFR: 16737 SKU: 43084393 UPC: 046798167372 Brand: Tetra Attachments: MSDS Sheets,