Hey all-- I've never had anything in my aquarium to introduce current on purpose. I've had HOB filters, sponge filters with an airstone, and bubble wands which create tiny amounts of current and surface agitation, but I've never used powerheads. I just bought this powerhead on Amazon, and I may be using it to build a sponge filter for my 55 gallon. https://www.amazon.com/gp/product/B00CJNGKO6/ I put it in the tank about halfway down, pointed it towards the opposite end of the tank (48" away), and turned it on (using the air inflow as a water inflow, since I don't want to add bubbles). In theory this thing is supposed to cycle all of the tank water 3 times per hour. From what I'm reading, that's not considered particularly strong current. But it just seemed really powerful. My plants were swaying and it seemed to be stirring up debris from the bottom. Am I just overreacting here, or is this actually too much current for my plants/fish (my fish are listed in my sig).