I had a tech out here to look at my 2000 sundance altamar - it leaks about an inch every few weeks. The only source of water appears to be around where the drain pipe comes out from the foam - which is pretty inaccessible with the control panel in front.

He recommened using that additive which will supposedly clog leaks. Not that crazy about the sound of it. Anyone have any success with the stuff? Any dangers in using it?

Thanks - Joe

Joe, personally, I would say D O N T _ U S E _ I T! The reason is, if you read the bottle, first you have to drain and clean the tub, then you have to fill it, add the additive, let it circulate for like 20 minutes, drain the tub, clean it again, fill it up IMMEDIATELY so the additive doesn't seize the pumps, etc.... and at best, it's putting a band-aid on a broken arm. Oh, and if you forgot to remove the filter during all this? Kiss it good bye! Ahh... Sundance... I've had the FUNNEST (is that a word yet?) experiance tracking down and fixing the leak on them. Do you have what is known as "vertical jets"? Usually they are a group of 4 or so jets in the footwell of the tub, close together. These are common leak points in Sundance tubs, and what happens is that the housing where the flex hose goes into the jet, cracks. This happened on mine as well. And with all the insulation they spray on these things, the leak can actually be on the other side of the tub compared to where the water is leaking out. They actually make a specific repair fitting for this type of leak. You dig out the insulation, cut the flex pvc at the fitting, glue this "adapter fix" over the jet housing, and insert the flex pvc back into it. Simple, cheap, pain in the _ss! Now, here is a trick I've learned when it comes to finding leaks. Take painter's drop cloth, and use it (with duct tape) to divide the tub into 3 or so sections. Fill the tub, making sure you fill each section evenly so you don't end up ripping the tape off, and once its filled and the water settles for about an hour, take standard food coloring tubes and make each section a different color. I would highly recommend that you use 2 tubes of the same color in each section. One tube is very light and very hard to detect later. Lightly stir the water so it mixes well, and in about 3 or so hours, take a clean paper towel and dab the water leaking out of the tub. The color will give you a good idea on where to start digging. Worked well in each case I've used this method. It at least eliminates about 2/3rd's the jets you have to try to dig around. When digging, don't use sharp objects. WHEN DIGGING DON'T USE SHARP OBJECTS! A nice dull wide bladed screwdriver works well, and just use it to pry away at the foam. I was stupid, tried a steak knife at first. Sure, it was too dull to slice the flex pvc hoses, but the tip was sharp enough it punctured quite well. So by the time I got to my cracked fitting, I also had to dig out 6 more hoses and repair them.

good luck