Val Posted February 7 Share Posted February 7 I started keeping fish 30 years ago with, of course, goldies. I had a trio in a 29g tank. Eventually the bug hit and over the next five years I came to have a pair of 55s and two 29s. Toward the end of this time the internet arrived and I spent a lot of time at AquariaCentral and reading Wetman's blog. Over the next five years, I discovered that I really don't like the maintenance required to keep 170 gallons and that I could kill even the easiest of plants. I gradually downsized to just a single 55g tank which I have since learned was maybe 62g. (It was German, I think, maybe 250 liters.) I happily kept goldies but rarely ventured on line anymore because the experts tell me that my tank is way overcrowded. Fast forward 20 years and I happily have a single 55g with goldies. I am not a hobbyist per se. I have simple goldies and I just like the movement and color an aquarium brings. Which means I am way behind the times when it comes to advances in keeping fish. Which brings me to coverless tanks. When I got started evaporation was the bugaboo. It was bad. Water may evaporate, but the minerals and metals in the water do not, so with every gallon of water that evaporates, the metals and hardness of the water supposedly increased. And if you're doing a water change you're not taking out as much water as you're putting in. So... covered tanks for me. It was practically a mantra. Coming back to the hobbyist side of things -- like finding this forum -- and rimless tanks are all the rage. Riddle me this: what's changed? Why is evaporation no longer feared? Link to comment Share on other sites More sharing options...
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