Pentair R171016 Rainbow 300 Automatic Pool and Spa Feeder

It is critical to follow the instructions as well as to apply some common sense. One of the connections leaked right away from the compression on to the pool supply line. Looking at it, it was just off a bit at an angle, I had to hold it very straight while I retightened, no leak. the metal strap that hold the compress fitting bends as it is tightened, this is normal , one had to look at that bending to ensure the fitting is not held at an angle. If so, then loosen and reposition and retighten, this will eliminate the leak.

I have gotten fed up with the issues with the salt system and, at the end of the life of my chlorinator cell, I have decided to try the "analog" method with this device. I love it. First, it is well-made, as other Pentair equipment I have. It dissolves the chlorine pucks evenly and the control does allow to manage the amount of chlorine generated. My pool is about 55,000L and I use the settings between 3 and 4. The device uses around one chlorine puck a day at this level. Installation is very simple, and the resulting connections do not seem to leak or let the air in. Hard to say how the plastic valves will hold over time. I am thinking about just buying an extra part kit to keep it handy when I need it. Challenges: opening it to refill is hard, you need to hold the device in place and use a piece of wood or a special key to turn the head off, even after tightening it lightly with your hand. The power of air pressure. I will bolt this device to the floor to make it simpler. Another problem is that you do not know how much clorine is left inside. Knowing that it eats about one tab a day, I think the only way is to open it once a week and refill to the top. And, finally, the amount of chlorine is directly related to how long does your pump work and at what speed. If you make any changes to that, like running pump overnight exceptionally - you need to adjust for that.

Perfect replacement for the original; super easy to install and it works great

Works as expected. However, the hole that accepts the flow valve had to be re-tapped (1/2” by 20) to fit the valve.

So I have had this exact auto feeder on a pool from the 90s. I suspect it might have been installed with the original pool, but I am not 100% sure. The lines, the valves, just several pieces had begun to tear and leak, so I wound up replacing the hole unit which had turned a beige color and could soon be on it's last legs too. I wasn't sure. This wasn't that hard to do and the only issues I had is some sand wound up getting under the o-ring, so it leaked. After I realized I needed to clean up the lid, it's been working great ever since, no leak! There is a good chance the unit itself was fine, but I figure something that lasted around 20 years is certainly worth replacing with the same. I can only hope the longevity is still there!

So I moved into this house. Old chlorinator broke, at the elbow check valve, while replacing a brittle water line. $120 for new at pool store, approx $65 on Amazon. No brainer, I spring for Amazon. Just got around to installing it today and the ball valve (part 20 in pic) broke, as in SNAPPED while I was turning it in place by hand. No pliers, no excessive force. Teflon tape used on threads, as noted in the directions. So this is some really weak brittle plastic evidently. Now I have to order a new elbow, and fish out the threads from the base of the chlorinator. Why 5 stars then? Cause it works awesome, the last one just became brittle from old age. I'm bummed about this elbow though. If you buy this, go super easy on this piece.

finally got my chlorine lever up and correct after 2 days ,easy install

Very disappointed. Can't keep our 20,000 gallon pool chlorinated even at max setting. Attempted modifications to increase its effectiveness. No improvement. Now stuck with this $115 piece of junk and looking for a better option.

Great product! Installed this for an indoor pool where the chlorine demand is low. I was able to turn it way down and get just the right amount of chlorination. The previous owner had installed a Hayward chlorinator which was better for outdoor pools and tended to over-chlorinate. Would highly recommend this product.

Material is a bit cheap but works just perfectly. Like the fact that tubing is bigger than other brands. Will certainly clog less.