Don't take this the wrong way, but it's actually very hard to say that as a fish is happy - they don't have anything else to do but swim around
Do you not have a test kit? If not it would be a good idea to get one as it's standard practice to monitor ammonia, nitrite, nitrate and pH weekly just before your water change. Without a kit, it's impossible to know whether your water change regime is adequate or not, and it can also indicate any problems as soon as they arise so giving you more time to deal with them before fish become sick or die.
The pH and hardness of your tap water are two things it's vital to know because you can't easily choose fish without that knowledge. Different fish from different locations have very different needs and it's much easier to buy fish that suit the water you have than to try and alter the water to suit the fish.
Your water hardness at 255 is likely to mean a high pH too and in truth is fine for Malawis (who should never be mixed with fish from anywhere else) but too hard and alkaline for almost all your other fish and especially the Angels, Kribs and Clown Loaches. You really need to soften the water in this tank, or rethink the fish you want to keep.
Get a test kit as soon as you can - we recommend the API Freshwater Master Test Kit which is usually less on eBay than in the shops.