What is the best size tanks for sidemount?

[ScubaJCBS]

I really enjoy sidemount have used several size tanks. I'm just wondering what some opinions are on their favorite size tanks.
Thank you in advance.

 

[Marie13]

I’d suspect a lot of it depends on the person’s size. I’m starting out SM with the same steel HP80s I use for single tank BM. I’m 5’5” and they work well for my height.

 

[The Chairman]

Depends on what you're doing. BHB? 50s. Doing a longish dive in Ginnie Springs? My LP120s are perfect.

 

[decompression]

Size, exposure suit, dive profile, weight required..........
Generally, long and lean for shape and close to neutral as possible.

 

[Remy B.]

If you are doing Rec dives only, I will say nothing beats two 7L tanks either steel or aluminium, Luxfer makes them.

 

[bamafan]

Depends on the gas requirements for the dive and how small of a hole you need to fit in. I generally dive al80's, lp 50's, hp 100's or lp 120's.

 

[tbone1004]

same as @bamafan
The vast majority of my dives are LP121's. Prior to those was HP120's since I'm tall. AL80's are nice if practical for warm water, but I don't use them for any of my normal diving. LP50's if I have to squeeze somewhere super tight or the cave is short/shallow.

 

[Dirty-Dog]

The best size is the size that provides enough gas for the dive that's been planned. That might be a single AL80, or four HP100's, or whatever.

 

[runsongas]

If you are doing Rec dives only, I will say nothing beats two 7L tanks either steel or aluminium, Luxfer makes them.

faber steel lp50 is better for the option of cave filling

 

[OMANDIVER]

Dry? Wet? Cave? Recreational?