Analisemcg
Hi, so to start i have a 20 gallon with 4 rasboras. it doesn't have a lid, so i get a ton of evaporation, maybe 2 gallons per week which was usually the same amount as my water change before i got rid of the lid. my question is, do i need to still do my 2-5 gallon water changes per week or can i just refill what evaporated? thank you!