Letting tap water set for 24hrs to lower chlorine in most cases not necessary. Most water supplies have switched to chlorimine (spelling ???). This will not evaporate like chlorine.
grey1223 Reviewed by grey1223 on . Say no to rain water? I started some seedlings about 3 days ago, the cotyldon are starting to droop. Is this from overwatering or the fact that im using rain water? Should I immediately switch to tap water? Do I let the tap water sit for 24 hours? My questions are vast, my experience and knowledge is limited, please help me. Rating: 5