Originally Posted by
JamesW
Sorry kesley, I must have missed that fact you don't age your water. This is probably controversial but I'd guess that daily 90% WC's with water that has ammonia and nitrite is worse than doing weekly 30% WC's. If the filter can eliminate the NH3 in 12h from a 90% WC then ~50% of their lives are spent irritated by ammonia and nitrite compared to 4h a week with 30% weekly WC's. Your discus probably won't grow to the same extreme size and beauty that we see on this forum but at least they won't die.