I hear you. I think it is the KISS method in action. Keep it simple stupid. Small water volumes down scare me my fist serious reef tank was a 15 gallon with a 250 watt MH over it. I grew a T. giga (this was when you could still get them) from maybe 3 inches across to 12 inches across in a 15. I barely tested my water and if I did I would just test calcium and throw some kent turbo calcium in there. I may have also been running a Kalk stirrer so that could have helped. But that tank was so much less complex than my current tank and things would grow. But I also did set that tank up with actual live rock.... (brining it all back). There are some pictures of that tank over in by build thread.