yanya22 wrote:I had the water tested for 125 gallon tank and the results showed the salinity was very high at 1.035. I have since water changed 20 gallons out adding no more salt.
You need to check your water parameters more often. Yes, that is very high, but if you lower it too quickly that can also be very damaging. That high a level is not normal, but there have been experiments that prove fish can tolerate higher ones if it was very very slowly brought that high. I am not recommending you do this, I do recommend you recheck the salinity daily and bring it down no more than .002 per day.
yanya22 wrote:Also, the ph was a tad low at 7.6.
This is a big stressor on the fish. Once again, bring that number up slowly ~ 0.2 per day at most. Bringing it up too fast will kill it before leaving it at that level.
yanya22 wrote:They get fed every 2-3 days. They're diet consists of 4 silverside, a chunk of Sally's krill, a pinch of flakes, and within the past week or two 3-4 clams.
I personally feel that your fish may need more nutrition and need to be fed often in small increments. Their diet needs to be more varied including seaweed and various shrimp and other invertebrats.
yanya22 wrote:I do a water change 3 times a year. I add roughly 3 gallons of r/o water every 2 weeks due to evaporation.
If you are only doing 3 per year, there is probably not a large enough turn over of "fresh" water. Water changes physically remove waste, I don't think you have enough surface area on your rock to house enough bacteria to sustain your tank.
Also, when was the last time you added any of the fish you mentioned earlier? and how long have you had the puffer?
I hope everything works out okay.
HTH
