tubing

Noticed a leak at my Stenner pump and realized I needed to replace the 1/4" drainage tube. I bought replacement tube (the tube was generic LDPE) and ferrules (Stenner UCAK200 Ferrule 1/4-Inch, Pack of 10) off Amazon, but when they arrived, the ferrules slid really easily on the tube--no friction...

Exactly type of tubing do folks use for their chlorine pumps? And what longevity do you get? Any reason not to use the cheap black 1/4" landscape drip tubing - such as Raindrop? Both the landscape drip tubing and the Stenner "FDA Approved" UV black tubing are polyethylene - though it is...

I know this is heavily debated around here with the usual consensus that professional solar panels give you more bang for the buck but that isn't what I'm seeing now that prices are skyrocketing. Cheapest panels I see on ebay are $130 for 2'x20'. There is only one company offering that price...