How do you cut flexi hose? Which tool is best to trim pipes for my koi pond grow on/quarantine tank

Through a bit of trial and error I try out different saws, a multi-tool and knife to cut Oase rubbed flexi hose as I get it ready to fit my pumps and filters.
See this video where I take a bit of a closeer look at this pipe:
• Oase flexi-hose A quic...
I’m a proper beginner at pond keeping and this video is part of a series of videos where I am documenting my journey to keeping my first koi.
I’ve got various other videos where I’m documenting the process of building a koi pond that would also make an ideal grow on or quarantine tank!
Thanks for watching and please leave me a comment if you have a better way to trim this pipe! :)
Current set-up:
IBC tank
* Evolution Aqua 10,000 lph Varipump
* AllPondSolutions pressure filter PFC-5000
* 11w UV
* Oase and Hoselock flexihose
* Cloverleaf 1kw pond heater
* Amazon float switch
* Boyu SES-40 airpump with 5” air stone
* DIY aerated bottom drain
* DIY internal moving bed bio chamber filter
* EA K1 and K1+ biological filter media
* Three stage dechlorinator on fresh water feed
Current Fish
* Momotaro Kohaju tosai (Koi Water Barn)
* Saki Karashigoitosai (Koi Water Barn)
Consumables
* Food: Medikoi Junior, Staple with colour enhancer
* EA Pure plus filter start gel
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