I'd think that would turn it into algae hell...
And sure, water changes are easy, BUT unlike larger tanks, a small tank like mine or even a 5 gallon does require DAILY attention, whether that's top offs or water changes. It has to be topped off every day. It really is harder to keep it stable. I've been really lucky with mine, and I've really paid attention to it as far as top offs, water changes, and water testing. Now 2 months into it my ammonia, nitrite, and nitrate all stay at 0 with just a weekly water change and a daily top off. But to get it where it is now I was doing almost daily water changes for a while.
Just something to think about.
Algae needs food to live.
If you use the right water, you really shouldn't have any algae.
Of course, that's theoretical...
But not sure why you'd say that would turn into an algae hell, quite honestly...