Byron, why do you have a canister filter on yours if you can get by with only a sponge? Will my water cloud up without the use of the HOB? Will I need to increase water changes or anything, that you know of?
I bought a canister filter for the three larger tanks when I got them back in the early-mid 1990's. The quite knowledgeable hobbyist staff in the store I deal with recommended canisters. I now know they were right, for a large planted tank they are the best filtration in my view. For my smaller tanks I use sponge.
I have frequently written that one really does not need a filter in a planted tank. However, for that to work, the tank must be well balanced between moderate fish load and heavy plants. I have very heavy fish stocking in my tanks, so the filter is basic to keep the balance, same as weekly 50% water changes.
I also have fish that require a current, at least in the 115g and 70g. Canister in 4+ foot tanks allow you to set up the filter return to provide more of a current at one end when it is necessary.
My dislike of these filters is that most produce an uncontrollable current. I used them back in the 1980's on 25g tanks and a 55g, my largest then. I had one Aquaclear which was a waterfall design; this is really not good for planted tanks with quiet fish. One evening when I was not home the power went out for just a few minutes and after it came back on the filter was dry and burned out. That was the last one of those I had. The others had a spigot that could be rotated so I achieved much the same effect as I have now with the canisters, directing the flow into the end wall so it is less intense. There really is not much difference between one of these and a canister. Both have "rocks" for biological filtration and one or more pads for clarity. But the ease of operation (and no risk of running dry during a power outage) is a plus for the canister. Plus they are out of the way rather than hanging on the tank, and more convenient. And canister now have control flow valves. And on 90g and 115g tanks canisters are more efficient.
Cloudy water is due to biological actions in the tank, not filters.