One Year in Two Days

Two days after this picture was taken my tank will have been up for one year. And that pic was taken two days ago. So today makes 1 year! Yippee!!!

But this isn’t the anniversary photo. Maybe I’ll take that tonight. There have definitely been changes in the last two days.

It’s been a stable year for the tank. But a disappointing year in some ways too. And a year of learning.

The fish have been healthy. I did have one case of bloat in one of my discus. And I thought that I had lost most of my Ottocinclus catfish until I tried to put some Rotalla wallichii in the tank, and I caught them eating the tips. So I guess they are just hiding in the plants unless there is something really tasty to come out for. Same with my amano shrimp (cardinia japonica). I thought they were gone too, but when I did a big trim a couple of weeks ago, I found dozens of them. Hiding too I suppose.

I’ve struggled with algae in this tank. None of the bad varieties. Just green spot (GSA) on the plants and green dust algae (GDA) on the tank walls. Lots of “experts” will tell you that GDA in particular just means you have a healthy tank. But lots of people don’t have it at all. I don’t mind a little. A minor wall cleaning every week or two is fine. But in a 180 gallon tank, any more than that is work. And I’ve been working.

I’ve flirted with a number of fertilization dosing regimens, and have settled back on the one I started with: letting the N an P in my tap water supply those macros, coupled with that being produced by plants, excess food, and biological breakdown of plant matter, supplemented with daily potassium and limited daily micros. That seems to both keep my plants healthy, and keep away the thread algae that wants to appear in any of my tanks that have sand substrates coupled with Phosphates over 1.4 ppm.

Ultimately I think the reason why dosing normal levels of N & P did not work for me in this tank was that my plant mass to animal mass ratio could not sustain it. The ammonia excreted by the discus was not being utilized by the plants fast enough. The plants were being dosed good levels of nitrogen in my dosing regimen, and the ammonia (NH4) was not being used fast enough and was triggering algae growth. Not that you could measure any ammonia in my tank. But it doesn’t take much to encourage algae.

For the sake of my plant health - which keeps the algae at bay -I’ve had to make a compromise that really hurts. I’m adding small daily doses of baking soda (NaHCO3), Epsom Salts (MgSO4), and Calcium Chloride (CaCl2) to raise my KH and GH. I’ve gone to great lengths to make this tank as low maintenance as possible, with a reasonable degree of success. One major goal has to been to be free of daily maintenance - with the exception of fish feeding. But if I’m away, anyone can do that for me.

To accomplish that my ferts are injected automatically, and my water changes are done in small, daily, completely automated cycles. To that end I’ve tried to let my plants adjust to the extremely low KH and GH of my tap water, and it just hasn’t worked. They don’t thrive without more calcium and magnesium than my tap provides. And the baking soda helps keep the pH stable. So I’m stuck adding this stuff daily. So much for no daily maintenance. I’ll just have to figure out a suitable way to automate this too.

And finally, I’ve finally finished all of the technical changes to the equipment that supports the tank. I’ve not posted info on it yet, but a pretty elaborate setup support the tank. A year ago I still had an additional pump and filter to install, a few improvements to make to the plumbing, and I needed to move the “water depth sensor” tube to a different bulkhead opening in the bottom of the tank. With that last labor intensive item done this weekend, there are no more planned changes to the equipment under the tank.

So I find myself at the end of a moderately successful first year of this tank. The hardware supporting it is finished. I’ve got the algae under control. And have finally found plants that work well with these lights, at these fertilization levels, at the warm temperatures discus require.

On the down side, I’ve got to figure out a way to automate my daily GH/KH boosting. And I’m not happy with the aquascape. That will - no doubt - be the focus of my efforts this coming year.

PS - If you see the dark discus that appear to be sulking in the right corner, they aren’t sulking. They’re OK. They are just tending their eggs.