They can be higher ash content than Somersets but my glass stays fairly clean. Somerset has much less ash but glass blackens up. I obtained them cheap. I might purchase them yet again for the proper cost. velvetfoot claimed: I saw a 1600 gallon cone bottom tank on Craigs List. https://bestwoodpellets95826.theisblog.com/34817620/bulk-wood-pellets-fundamentals-explained