hi there,im only after buying second hand 190 litre fish tank. the tank and water is year old. water came in jars with tank. set tank up ,put old water back in tank and left it. 2 days later all fish dead. done test on water and aminoma off the chart. can anyone tell me the best way to fix this. do i empty tank and put new water in it? guy i bought tank from.said i be mad to dump 190 litrers water a year old. how can i fix this. there is no fish in tank. 4 craps just.wats my easiy opposite to change this. any help would be great. thanks
The good bacteria builds in the filter on the filter media and on the plants and substrate. If u rinsed any of that
( especially filter cartridges) with tap water or it dried out it could have harmed the majority of your BB ( benificial bacteria)Technically as long as you have BB in your filter all of your water can be fresh ( dechlorinated ) Did u rinse the filter cartridges or get new ones??
So God created great sea creatures and every living thing that scurries and swarms in the water
I believe you were right the first time around dralarms. But either way, the water does next to nothing in terms of bb or cycling....the only thing keeping the old water would prevent is the need to re-acclimate....but then again saving 50% of the water would have done the same trick....plus who knows what the previous owner put in the water....