Just bought two 50# bags for about $16 myself. Was thinking I would use one a piece on two 55's. Still remodeling my basement so I haven't redone the tanks yet. Let me know how that works out as far as fill level and ease of rinsing.
Looks good? I still haven't switched over myself yet. Planning on it this week. How was the cleaning process? Did it take Long to wash? I figured 50# would only do a four foot tank. So I bought the two, one for each 55. Let me know how you prepped it and if your tank was cloudy.