Upgrade your MEDIUM Fluval Breeder Box for better flow, safer fry, and precision‑level performance. Looking to get more out of your MEDIUM Fluval Breeder Box? The BST3D Upgrade Kit transforms the stock breeder box into a high‑performance system ideal for serious hobbyists and fish breeders. Improve water flow, increase fry safety, and boost overall reliability with precision‑designed 3D‑printed components and premium materials. What’s in the Kit: 1 x High‑Flow Drop‑In Exit Grate Bracket (Custom Design M) 1 x Plastic Teeth Exit Grate (1mm slits) 1 x Stainless Steel 30‑Mesh Exit Grate (0.6mm holes) 1 x Uplift Tube Intake + Custom Adapter 1 x Black Prefilter Sponge 1 x Breeder Box Leveler + 2 x Stand‑Off Feet Detailed What’s Included in the BST3D Upgrade Kit High‑Flow Drop‑In Exit Grate Bracket (Custom Design) Over 3× the surface area of the stock exit Significantly improves water movement and reduces clogging Compatible with additional BST3D custom grate inserts Custom‑fit exclusively for the MEDIUM Fluval Breeder Box Plastic Teeth Exit Grate Precision‑cut with 27 slits (1 mm × 21 mm) Excellent flow while keeping fry safely inside the box Upgraded 304 Stainless Steel 30‑Mesh Exit Grate Corrosion‑resistant 304 stainless steel 0.6 mm holes for maximum fry protection Provides smooth, consistent flow and long‑term durability Uplift Tube Intake + Custom Adapter Fits the stock Fluval uplift tube perfectly Includes a secure airline connection point Offers an increased intake surface area over the stock parts Improves flow stability and reduces clogging Black Prefilter Sponge (1 included) Custom‑fit for the intake tube Blocks debris before it enters the breeder box Extends time between cleanings and maintains steady flow One Breeder Box Leveler + Two Stand‑Off Feet Keeps your breeder box perfectly level Ideal when positioning the box slightly away from the tank wall Makes adding/removing fry and cleaning significantly easier NOT INCLUDED Medium Fluval Breeder Box Aquarium air pump Adhesives – leveler and standoff feet in the BST3D upgrade package don't have to be used if you don't want to permanently modify your breeder box (you can stick with the stock lever). Adhesive Preparation Follow these steps in order: (Optional) Lightly scuff both bonding surfaces with 400–600 grit sandpaper.Note: This can improve adhesion, but I don’t typically find it necessary. (Highly Recommended) Clean both bonding surfaces really well with isopropyl alcohol before applying the adhesive. This removes grease, dust, and fingerprints, ensuring a strong, reliable bond. Use CA glue to bond the two surfaces together. My preferred choice is KRAFTPROTZ 3D Printing Super Glue. VIDEO HOW TO SET UP - https://www.facebook.com/100050049428451/videos/pcb.1587205269624439/1434886471804665 Care Instructions for 3D‑Printed Parts Rinse your parts with room‑temperature tap water, then air‑dry or gently towel‑dry. To keep them in top condition, avoid dishwashers, high heat, or prolonged direct sunlight. (especially temperatures above 110°F) Notice: This item is an aftermarket component designed by BST 3D Printing to be compatible with certain setups. We are not affiliated with, associated with, or sponsored by Fluval. All brand names and trademarks belong to their respective owners. a { text-decoration: none; color: #464feb; } tr th, tr td { border: 1px solid #e6e6e6; } tr th { background-color: #f5f5f5; }
