any other opinions? also think i should replace the fish or no ?
I believe the fish you have are plenty sufficient for the fish-in cycle. The bacteria need to be wet, so if you have to lower the water levels, I believe you can just pull the filter and have it sit in a bucket of tank water, and the bacteria will survive the amount of time it takes to complete the water change.
Why would you pull the filter to do a water change? With that tiny tank it'll take about 10 minutes to do a water change. Just turn the filter and heater off while you're doing it, then plug them back in when you're done.
any other opinions? also think i should replace the fish or no ?
At the risk of being redundant, NO.
Because I thought he was worried about it drying out. I don't think it is necessary, but if it gives piece of mind, then it very well may be worth it. I am a novice, as well as he is, so I am still trying to sort things out myself. For me, the most important thing in fishkeeping, even above ease of doing things is to be relaxed while going about business. If someone is all stressed out, they are not going to want to do the little things that are necessary, and then things can turn bad. I was looking at it from a perspective of piece of mind. I agree that it would take much longer to dry out and harm the bacteria, but sometimes people do things a little differently, because it makes them feel better about it. There is no need to pull the filter,
but if it keeps the blood pressure down, then what would it hurt?