Any advice or others experiences? What’s a good height for the bag, I might’ve had mine too high
The height of the bag being too high is only a significant issue when you have a straight pipe or tube inserted and you have the clamp completely open (if you have a clamp that can be set to different degrees of being open. If you have a clamp that can only be "open" or "closed", then height can affect the flow rate (and the force or pressure at which the stream is discharged). Multiple opening douche style nozzles will have an increased flow rate due to height, but the fluid dynamics of the usual 8 openings toward the end of the tube with typical hose lengths tend to limit the maximum flow rate through each opening.
I would recommend that the bag be at least 24 inches (61 cm) above the inserted nozzle. The colon muscles are actually quite capable of closing down and squeezing the enema solution back up the tube to a height of more than 3 feet (90-100cm) if there isn't a check valve in the line to prevent backflow. Most bags have hoses that are between 1.5 and 2 meters (so unless you change hose length to a much longer length to add effective height, you will be limited to how high you can actual raise it above the nozzle and hence the pressure/flow rate that can occur). Most bags start in the 1.5-2.0 liter range and if you aren't accustomed to that volume, it can be a bit strange and a little challenging. One thing you may have to deal with is the fact that liquid may have to work its way around the fecal matter in the colon to get further up the colon. The water will tends to expand the colon below any blockage and you may experience a dramatic increase in the pressure below the blockage (a good reason to not have the bag too high), and/or the expansion of the colon around the blockage that has the liquid flow up and the release of the fecal matter to be pushed down to the rectum.
A slower fill rate tends to balance this (or a good, small volume "clean-out enema" can give a clearer channel for the liquid to flow). Depending upon how you position yourself, a 2-liter enema is probably able to fill the rectum, sigmoid, and descending colon and begin filling the transverse colon (some of the solution can crossover the transverse colon and begin filling the ascending colon). It generally takes me more than three liters to feel like the enema solution has reached all areas of my lower colon. The actual capacity is somewhat higher but peristalsis can intercede and make it difficult to hold an enema.
Note, it is not a contest to see how much you can hold and although I can, on occasion, hold very large volumes (just over 6 liters), it is not unusual for me to stop around 4-liters. But I also find a great deal of pleasure with multiple 2-liter enemas in succession (that may accumulate some unexpelled liquid that may increase effective holding volumes to around 3 or maybe 4 liters).
Enjoy the new sensations.