Two issues that I encounter frequently:
1) Unlevel aquarium hence water line. Just push the sand over to the low side and it will push the water up .
2) Water smells bad. Use water from the swimming pool, it always smells good!
1) Unlevel aquarium hence water line. Just push the sand over to the low side and it will push the water up .
2) Water smells bad. Use water from the swimming pool, it always smells good!