6 in. - Micro-Pore Hog - For Hydroponics Systems - Use with 1/4 in. Tubing - Deep Water Innovations DWMPD050

I also did not get a reducer to fit standard airline. Worse still, my "hog" leaked a lot of air out of the two ends because the caps weren't properly sealed. I had to use epoxy to correct the problem. For a company to charge $35.00 for a defective item that could have been so easily checked and fixed suggests their quality control is very poor.I would have given this item one star, but in all honesty the areas of the stone face that did produced bubbles made bubbles as fine as the best wood block diffusers.

Only drawback is the inlet nipple is 3/8ths, not common quarter. Otherwise, great product! As for all of my purchases on Amazon.com has been with great business pleasure. So far all of the venders I've done business with has been very reliable and so I highly recommend doing business as much as possible with amazon.

My stone ( boss hog ) did not come with a reducer to smaller diameter tubing. I sent an email off to DWI and they said it shoud have been in the box. I was told one would be sent to me... That was months ago and many emails later....Do yourself a favor and buy a dozen blue stones for the price of this one and just dispose of them when it's time...Forget trying to get parts for your expensive stones with this poor CS