Review on Thermaltake Pacific Chrome 4 C-ProG1/4 PETG 16mm OD Compression Fitting with Build-In O-Rings (CL-W213-CU00SL-A) by Albert Wallin

Obviously there are two types of connectors. The only ones worth your money are the RGB hardware. Other fittings will leak if you don't have a perfect 90° angle, and your lines will burst when pressure is applied. They have plenty of o-rings which, while preventing leaks, also allow for easy slippage off hard pipes. . I had no issues with the RGB lights other than their terrible price which has only gone up. When I decided to upgrade my water circuit and save on other fixtures, I ended up wrecking my $1200+ power supply and motherboard. I'm not done with the restoration of my car yet. Don't buy regular o-ring fittings unless you have perfect 90° elbows that are tight and don't have room for the stiff hose to slip off the fittings. I also recommend bleeding your tank to reduce pressure build-up.