Be careful what you buy. Too hard tubing will damage the motor.
Harder than factory will slow down the motor so it will dose less. Too soft a hose will dose more.
The Santoprene listed above has a Shore hardness of 73A. I do not know what the factory hose was rated at but from what I can find online it could be anywhere between 64 and 73.
I have a brand new factory hose that tested at 1.18ml/minute.
I bought silicone hose with a Shore hardness of around 50A and my first couple test runs gave me 1.5ml/minute.
I'm planning on some more testing with a couple other of my pumps and if this is the case I'll need to recalculate all my timers.
I found the silicone hose to be somewhat sticky, even after washing, so I lubed it with silicone grease. Possibly that's what made it dose so much. I plan on another test with ungreased tubing. Maybe with it being sticky will get me back closer to 1.1ml/minute.
Harder than factory will slow down the motor so it will dose less. Too soft a hose will dose more.
The Santoprene listed above has a Shore hardness of 73A. I do not know what the factory hose was rated at but from what I can find online it could be anywhere between 64 and 73.
I have a brand new factory hose that tested at 1.18ml/minute.
I bought silicone hose with a Shore hardness of around 50A and my first couple test runs gave me 1.5ml/minute.
I'm planning on some more testing with a couple other of my pumps and if this is the case I'll need to recalculate all my timers.
I found the silicone hose to be somewhat sticky, even after washing, so I lubed it with silicone grease. Possibly that's what made it dose so much. I plan on another test with ungreased tubing. Maybe with it being sticky will get me back closer to 1.1ml/minute.