Versa When to Replace Tubing

[ross0201]

Theres no official replacement requirement. They chose a tube with better resiliency than the kamoer.

Ecotech has simulated 100s of years of awc with the same tube.

I would approach tube replacement like this: whenever the monthly calibration is so far off (20%) the previous presaved settings, I would order a replacement.

Do you know what tubing Echotech uses? I know Masterflex lists pharmed tubing as one of their more durable materials. I always thought clear was so you could see inside but sacrificed durability; but this is an impression not a fact.

 

[ca1ore]

It's an inherent trait for all peristaltic pumps. Being that they are positive displacement pumps they're work better when pushing rather than pulling.

When pulling, a vacuum is created on the backside (inlet side) and strains the resiliency of the soft tube. External pressures act upon it trying to collapse it. The greater the vacuum the greater the force trying to collapse the tube.

If you limit the restriction on the backside the integrity of the tubes elasticity will last longer.

Pushing on the other hand is where a positive displacement pump shines. Your biggest limitation is the amount of torque available from the motor.

Hmmn, not sure that actually makes sense to me ..... surely wherever you put the pump there is a vacuum on the inlet side.

 

[Sisterlimonpot]

Hmmn, not sure that actually makes sense to me ..... surely wherever you put the pump there is a vacuum on the inlet side.

You're getting there, a 6" inlet tube will have less vacuum than one that is 6'.

It doesn't matter if you have a masterflex, dos, fx-stp, or versa. That's a characteristic of any peristaltic pump.

 

[ca1ore]

Seems to me a distinction without a practical difference. Given the configuration of my CaRx I conclude there is no compelling reason to switch from pull to push. Versa did not impress me particularly so I am sticking with the MasterFlex. Will be interesting to see over time whether the former requires less frequent peri tube replacement.

 

[TX_Punisher]

I think we all understand and know replacing tubing on any Peru pump is part of a normal maintenance routine. I like the idea of this pump in my calcium reactor as my alk rises I bc the am, this I was planning on a programmable peri pump for a faster speed in the am (less alk) and a slower speed in the pm (more alk). But, changing tubing every 2-3 months is a little much.

so, are the v2versions of this pump more reliable? Can’t decide if I want to make The switch from my kamoer.

 

[gflat65]

Sadly, I’m finding a 3-4 month life on continuous use at 50-70 ml/min on the versa pump tubing (rollers appear to be falling apart already, too - mine was new in May…).

Are there any actual standards for aquarium products, or is it just a BS fest for the marketing departments for each company? Disappointed, to say the least.