Yes as I stated above i have been adding ph up daily.
I have
3" clown knife
2" white tip cat
1" blue gill caught local
1" gold fish (silver, upward eyes, no dorsal fin)
.5" orange tatras
also 5-6 feeder gupps and a snail
I have 3 small plastic plants in a 29 gallon tank. The bottom substrate is black sand. I also have 4 small rocks covering my bubble wall tube. There is a lava rock propped up in the middle with holes in it for my clown knife to hide during the day....
I have 2 power flow filters a 30 and a 40, i do weekly 30% water changes with a siphon pump, and change the filter media and carbon ever 1.5 to 2 months....
There is no need to alter you ph from what it normally is unless you are keeping fish that require a special PH. Fish adapt quickly to there ph and even tho it may not be in the ideal range for the fish a stable ph is better than a shifting one.
You water does not have enough buffers in it to hold the ph up. I suggest you toss the ph up and if you really want to or feel the need to up your ph, get some crushed coral from your LFS and had a small amt to your substrate or in a media bag in your filter. This will raise your ph naturally, al you have to do is add some more crushed coral when what you have gets low.
As a side note, you may want to check the stocking of your tank as far as fish size and compatibility...forsee possibly a few probs as the fish grow with tank size and possible aggression. Goldfish are also coldwater fish..they need the higher amt of dissolved oxygen in the water than tropical fish do. Cold water has higher amts of dissolved oxygen than warm water.
the ph from my tap is very high, the exact opposite of what my tank is. thanks for the crushed coral idea....i realize that a stable ph would be better than shocking my fish everyday, but i am just not satisfied with acidic water i want my ph to be right around nuetral, it may be ocd...haha my gold fish has done fine for about 2 yrs now in 74f water give or take a few degs.my bubble wall is about 2/3 as long as my tank so im sure there must be plenty off dissolved oxy in the water....