I am buying a few more fish for my tank tomorrow and just wondering what do people do with regards to cleaning the tank do you do it before the new fish are added in or do you do it after? I am planning to add them in the morning and then when the stress and everything has calmed down and worn off I will do a water change and clean the substrate but what do you think is best?
I think after on the basis that I will be adding the water from the fish shop (it is a reputable one with the sole purpose of selling fish and before I bought anything I visited a few times and looked at their fish they were always colourful lively and I never once saw a dead fish or a poorly looking fish in the water unlike some of the other places I scoped out) as I feel it is less stressful to gently tip them out after acclimatising then it is to net them out of the bag they swim out job done.
All my tests have come back as negative, no ammonia, nitrate or nitrite so I am happy with that so cleaning, before or after buying fish?
I think after on the basis that I will be adding the water from the fish shop (it is a reputable one with the sole purpose of selling fish and before I bought anything I visited a few times and looked at their fish they were always colourful lively and I never once saw a dead fish or a poorly looking fish in the water unlike some of the other places I scoped out) as I feel it is less stressful to gently tip them out after acclimatising then it is to net them out of the bag they swim out job done.
All my tests have come back as negative, no ammonia, nitrate or nitrite so I am happy with that so cleaning, before or after buying fish?

Then will do a change old water into mop bucket 








