Cycling...
Nothing like sitting around watching bacteria grow. About 1 week into cycling and not many changes in chemistry noted yet. I'm sure the tetras are eating and making ammonia, but its still is barely detectable. No nitrites or nitrates yet. So far they are active and seem happy! The tanins have settled down some, and I think I'm through the first diatome bloom. So its mostly been feeding the fish, checking the chemistry every few days, and some housekeeping chores.
One of the original goals for my light hood was for the light rack to be both adjustable in height and to lift up for easier access during maintenance. With the relatively low ceilings in the basement, I knew such a short hood would limit my access somewhat. So I spent some time replacing the wooden blocks with some lengths of chain. The new system allows me to raise and lower the height by adding or removing lengths, plus its attached to the top lid, so the front of the light rack lifts up when the top is raised. Maybe the pictures describe it better.
Old "wooden block" adjustment system
New "adjustable chain" system - lid down
New "adjustable chain" system - lid up
I also worked on some plumbing. I received 3 new sets of Eheim quick disconnects and plumbed them into the 3 pump circuits. Now the pumps, heaters, and CO2 reactor can be completely isolated and removed for maintenance. If something goes out of service, I can keep the loops running. A little jumbled, but here's my left sided Eheim 2217 with the inline heater.
Finally, I received my CO2 system from greenleafaquariums.com. I'm clearly no expert, nor do I yet have a single plant in the tank, but for what its worth, here's how I've got it set up now.
pH meter seems to be working, and the solenoid does shut off the CO2 when the target pH is reached. Based on my kH, I have a CO2 concentration of 23 ppm at my goal pH of 6.8. We'll see how things work in practice when I add some plants but theorectically...
Wish me luck.