1/4in ID x 3/8in OD Black Vinyl Tubing
SKU: RF-510-0250B
- Complete Algae Defense: Solid opaque black compound blocks light penetration entirely, preventing unsightly and restrictive interior algae film build-up.
- Reef Safe & Certified Non-Toxic: Formulated without heavy metals or toxic plasticizers, guaranteeing 100% safety for sensitive corals, fish, and invertebrates.
- Ultra-Flexible Architecture: Highly pliable material makes routing through cramped cabinet spaces, behind sumps, and into compact reactors effortless.
- Smooth Inner Bore: Features a low-friction internal channel that prevents solid sediment settling, optimizing consistent water flow.
- Custom Cut Sizing: Sold cleanly by the linear foot, allowing aquarists to purchase the exact span required for their specific build with zero wasted material.
CoralVue 1/4" ID x 3/8" OD Black Vinyl Tubing
The CoralVue 1/4" ID x 3/8" OD Black Vinyl Tubing (SKU: RF-510-0250B) is a specialized low-pressure fluid management component engineered to connect modern dosing networks, secondary media reactors, automatic top-off (ATO) reservoirs, and small utility pump feeds. Standard clear vinyl hoses are a common pitfall in aquarium plumbing; exposure to ambient light triggers rapid interior algae growth, eventually restricting flow and throwing off critical dosing measurements. The RF-510-0250B completely resolves this issue. Its dense, light-blocking black barrier eliminates photosynthetic light pass-through entirely, maintaining an open, unrestricted line for consistent dosing and water flow.
Manufactured to stringent food-grade standards, this flexible PVC hose is certified non-toxic and heavy-metal free. It is completely safe for direct, continuous contact with sensitive marine reef setups, freshwater aquariums, and sterile hydroponic reservoirs. With a highly pliable physical memory, it handles tight corners and sweeping bends inside cramped cabinet spaces without collapsing, kinking, or restricting your flow velocity.
Key Features
Engineered for Micro-Flows: Perfectly matched for standard aquarium dosing lines, reactor feeds, and automated evaporation-refill networks.
Quick Barb Adaptability: Stretches securely over standard 1/4" plastic, glass, or metric acrylic barb fittings.
Robust Wall Construction: The 1/16" thick vinyl wall provides a perfect balance of flexibility and structure, helping the line resist collapse under mild suction.
(Note: This product is sold in bulk, priced per linear foot. To purchase a continuous run, enter your desired length as the item quantity. Secure snap clamps and barb adapters are sold under separate categories).
What’s Included:
CoralVue 1/4" ID x 3/8" OD Black Vinyl Tubing (Cut per foot as specified in order quantity)
Technical Specs:
Official Manufacturing Title: 1/4" ID x 3/8" OD Black Vinyl Tubing
SKU / Factory Part Identifier: RF-510-0250B
Nominal Inside Diameter (ID): 1/4" (0.250 Inches / 6.35mm)
Nominal Outside Diameter (OD): 3/8" (0.375 Inches / 9.52mm)
Wall Thickness: 1/16" (0.062 Inches / 1.58mm)
Material Composition: Non-toxic, food-grade unreinforced flexible Polyvinyl Chloride (PVC)
Pressure Rating Limit: Up to 55 PSI continuous working capacity at 73°F (23°C)
Operating Temperature Range: 5°F to 150°F (-15°C to 65°C)
Primary Color Finish: Solid Opaque Black
While most of our equipment carries a one-year manufacturer's warranty, consumable products like fish and coral foods are not covered under traditional warranty terms due to their perishable nature and varied storage conditions. However, we fully stand behind the quality of every product we sell. If you experience any issues with your food purchase shortly after receiving it, such as concerns about freshness, packaging integrity, or product quality, please contact us at [email protected]. We're committed to making it right and will work with you to resolve any problems quickly and fairly.
- Measure your run length with a flexible measuring tape, adding an extra 2 to 3 inches to prevent pulling on the connections. Cut the tubing square with a sharp utility knife or heavy-duty shears.
- If connecting to a barb fitting, dip the open tip of the black vinyl tubing into a cup of warm water for 30 seconds. This softens the vinyl and allows it to slide onto the barb effortlessly.
- Push the tubing over your 1/4" barb adapter, ensuring the tubing seats completely past the final sealing ridge.
- Position your mechanical hose clamp (ratcheting plastic or wire clamp) over the barb zone and tighten it firmly to ensure a leak-proof mechanical hold.
- Route the tubing along your cabinet path, securing it with plastic adhesive conduit clips every 12 inches to prevent sagging or accidental pulling.
- Run a low-pressure fluid diagnostic test to verify a watertight seal at all connection points before completing setup.
Pro Tips:
- Pre-Warm the Tubing to Eliminate Tight Coil Kinks.
CRITICAL AQUARIUM PLUMBING DESIGN TIP: Because this tubing is shipped coiled, it may retain a physical memory curve. To make routing clean and stress-free, uncoil your cut length and submerge it in warm water for 1 to 2 minutes. This relaxes the vinyl, allowing you to route it straight and make sweeping bends without any structural tension or kinking.
- Always Secure Your Tubing Connections with Plastic Snapper Clamps. While 1/4" vinyl tubing forms a naturally snug grip on matching barb fittings, never leave pressurized dosing or top-off lines completely unclamped. Over time, plasticizers in flexible tubing will relax slightly, which can lead to leaks under pump pressure. A simple plastic ratcheting snapper clamp keeps your connections watertight.
- Do Not Use This Tubing on High-Pressure Pumps. This unreinforced flexible black vinyl hose is engineered specifically for low-pressure applications, like dosing pumps and gravity feeds. Never use it on high-pressure return lines, pressurized canister filters, or hot-water systems, as continuous high pressures and thermal stress can cause unreinforced walls to bubble, balloon, or eventually burst.