JBL Aquarium Hose 16/22 Grey - 18 m Roll

JBL Aquarium Hose 16/22 Grey - 18 m Roll is an 18 metre roll of grey 16/22 mm aquarium hose.

Key Features

• 16 mm bore for the larger filters: The size the JBL CristalProfi e1500 models run on, and the bore to use anywhere a narrower hose would throttle a strong pump and waste the flow you paid for.
• Grey tint keeps the light out: JBL credit the grey tint with holding algae back. A clear hose in a lit room grows a green film along the inside that you cannot reach to clean. A tinted one never lets it start.
• Water changes, filter runs and UV-C: One roll covers the siphon for water changes, the inlet and outlet runs on an external filter, the feed to a UV-C clarifier and the plumbing on a small pond pump.
• Resistant to what an aquarium throws at it: JBL list it as resistant to ozone, oil, salt, acids, alkalis, petrol and greases. The ozone and salt resistance are the ones that matter in practice, on a UV-C or ozone system and on any marine tank where salt creep works away at ordinary tubing.
• Soft walled and flexible: It follows the route you need behind a cabinet without elbows or joints, and every joint you avoid is one less place for a leak to start.

Which Bore Do I Need

• The two numbers are diameters in millimetres: the first is the inside of the hose, the second the outside. A 12/16 hose is 12 mm bore with a 16 mm outside wall, and those two figures are what decide whether it fits your filter's connections and your mounting clips.
• JBL's CristalProfi external filters run 12/16 on the e400, e700 and e900 models, 16/22 on the e1500 models and 19/25 on the e1900 models.
• If you are replacing an existing run and are unsure, measure across the inside of the old hose. One size out either way will either not push on at all or will not seal when it does.
• Mounting clips and FixSets are sold by the same pair of numbers, so the clips that suit your filter carry the same size as the hose that suits it.

Fitting And Looking After It

• Warm the end in hot water for a minute before you push it on. Hose off a roll is stiff and curled, and forcing it on cold is how barbs get snapped and ends split.
• Cut it square with a sharp blade. Scissors crush the end and leave an edge that will not seal properly.
• Push it fully home over the barb, then tighten the screw collar or clamp by hand only. No tools, or you will crack the fitting.
• Keep the run as short and as straight as you can. Every tight bend and every extra metre costs you flow, and a single kink can halve it.
• Hose furs up inside with biofilm over a year or two, which narrows the bore and quietly cuts the filter's output. A flexible hose brush pulled through at service time clears it, and that is very often the answer when a filter seems to have lost power for no reason at all.
• Replace it once it has gone hard, cloudy or will not straighten out. Old hose kinks permanently and cracks where it meets the fittings.

Good To Know

• Grey hides against a cabinet, a wall or a dark background. The same hose in green hides against planting instead, and the two are otherwise identical.
• Not for pressurised CO2. Ordinary hose is permeable to carbon dioxide and will bleed gas along its whole length, so a CO2 system needs the JBL ProFlora CO2-proof hose instead.
• A full roll is aimed at shops, installers and anyone running a fishroom or several tanks. If you only need a few metres, tell us and we will let you know what we can do.
• For fresh water, marine and small pond use. A full size pond pump usually takes a much larger bore than these, so check the outlet on your pump before you order.