Priming
- Thread starter mrtash
- Start date
Truck
UKAPS
as far as im aware they are self priming, im looking at buying one
it has a plunger on the top
My best advice after having a 305 (pig to prime) is to fill the canister up with as much tank water as possible before you start to try priming. The as you say, plunge the level up and down and until you see some water coming out of the outlet pipe (this can be hard work, you need to do it pretty quickly for it to work), once you see water coming out, immediately turn it on. You may have to repeat this procedure several times in order to get it flowing, then NEVER turn it off again 
smegforbrains
Fish Addict
They are the easiest canisters to prime IME.
If you don't pre-fill the canister, you will need to remove the bottom off the outlet duck bill as the priming plunger draws water into the filter through the outlet. By priming the plunger, water will be drawn into the outlet pipe and you will need to top up the tank. IME, it will take about three or four strokes of the plunger before the syphon effect takes over and fills the canister. Once the water level in the tank stops dropping, the canister is full and you can put the bottom plug back on the duck bill and switch on. You will need to make sure that the bottom of the duck bill stays submerged or the syphon will stop.
The above does not work if you have a spray bar fitted so you will need to pre-fill the canister. Fill up to the top of the baskets and close the lid. Attach the pipes and prime the plunger a couple of times and switch on.
With either method, you may notice a noise from the impellor when you switch on. This will disappear after a few seconds once the canister is 100% full.
If the plunger does not seem to draw water, it may need 'refreshing'. To do this, pull off the silicone cup from inside the powerhead and drop it into boiling water for about a minute to soften the silicone rubber. Then press it firmly onto a smooth surface to spread it's shape. This will return the cup to it's proper shape and you can re-fit it.
If you don't pre-fill the canister, you will need to remove the bottom off the outlet duck bill as the priming plunger draws water into the filter through the outlet. By priming the plunger, water will be drawn into the outlet pipe and you will need to top up the tank. IME, it will take about three or four strokes of the plunger before the syphon effect takes over and fills the canister. Once the water level in the tank stops dropping, the canister is full and you can put the bottom plug back on the duck bill and switch on. You will need to make sure that the bottom of the duck bill stays submerged or the syphon will stop.
The above does not work if you have a spray bar fitted so you will need to pre-fill the canister. Fill up to the top of the baskets and close the lid. Attach the pipes and prime the plunger a couple of times and switch on.
With either method, you may notice a noise from the impellor when you switch on. This will disappear after a few seconds once the canister is 100% full.
If the plunger does not seem to draw water, it may need 'refreshing'. To do this, pull off the silicone cup from inside the powerhead and drop it into boiling water for about a minute to soften the silicone rubber. Then press it firmly onto a smooth surface to spread it's shape. This will return the cup to it's proper shape and you can re-fit it.
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