Just keep adding water! Use the local hydrant if you need to.....LOL.... Perhaps you could do as you say and make low water level and grow low plants or ones that are emersed....a frog or two would look cool!
100 Gal Planted, two Filstar XP3, Milwaukee SMS 122 pH controller, Milwaukee reg/bubble, compressed CO2, reactor 1000, 7 WCMM, 12 Ottos, 14 neons, 1 SAE, 3 German blue rams, 2 Florida Flag Fish
10 Gallon...20 Endler's live bearers planted, peat/kitty litter/sand substrate
15 Gallon...Just Schultz Aquatic Plant soil