After the catfish convention auction, I came home and started acclimating the new bristlenose plecos that I got. I putting them in a 20L quarantine tank, and when I turned around I noticed that none of the sunfish or killies that usually swarm the front of the tank were there. Eventually, I spotted a few of the sunnies dug into the Ranalisma rostrata, and a few others swimming awkwardly at the water surface.

Immediately, I knew what had happened; the CO2 tank ran out, and dumped a ton of CO2 into the aquarium all at once. Right away, I pulled out my Python hose, and did a 50% water change. I also borrowed an air pump from another tank, and threw an airstone into the 40G. At that point, all I could do is wait and hope that I wasn’t too late.

I’m happy to report that despite some really dire looking fish, nearly all of the fish survived as of today. I only have one sunfish confirmed dead, and all killies are accounted for. I was lucky.

So, now the question is what can I do to prevent this from happening again? Well, two things come to mind:

1. I could add a pH controller to control the solenoid on my CO2 tank. If the tank suddenly started dumping, the pH controller would shut off the flow of CO2 once the pH dropped below a certain level. Unfortunately, this is not the cheapest solution.

2. I could attach a low-pressure regulator to the regulator I currently have. This would detect the low pressure that causes a CO2 dump, and vent that gas to the room, instead of the aquarium. The downside to this is that I already have a 3-way manifold on my regulator, which is pretty heavy. I’m not confident that the low-pressure regulator could support that weight.

So, I’m not sure what I’m going to do. At this point, I should have at least 6 months to decide before this could happen again. It’s not even a guarantee that it will happen again. That said, I don’t want to take any chances. Does anyone else have any alternative suggestions for what I could do to prevent this from happening in the future?

I’ve been quite busy this week with a number of non-aquarium related things going on, so it’s no surprise that I haven’t been able to post, or tend my aquariums as much as I would normally like to. I have continued to dose my 75G every morning, however, and when I do that, without much attention, it soon turns into this overgrown jungle.

Click for larger image

The Stargrass, in particular, in the back right/middle has completely taken over the area, shading out everything in front of it. Fortunately, all I have are a bunch of crypts, anubias, and other non-light-hungry plants there. I hope to be able to clean up this tank a bit this weekend, so that it’s back in tip-top shape in a week or two. If I’m really ambitious, I might change up the aquascape a little bit because I’ve been wanting to do that for awhile. We’ll see. I’ll post an updated picture once I have it back to a more presentable state.

It’s been almost three months since I tore down my 40G aquarium, and restarted it with a substrate based on earthworm castings produced from my kitchen scraps. From the beginning I experienced great growth, but I also had a huge outbreak of hair algae. I’m still not sure whether this was leftover algae that came in from the previous setup, or whether it was spurred along by the earthworm castings. Either way, it’s gone now, and the tank it doing great.

40G - Click picture for larger view.

The aquascape has changed a fair amount, as I’ve pulled out a significant amount of the hardscape I originally placed, largely to find room for a smattering of new plants that I needed to house. The Ranalisma rostrata has just about filled in the foreground. The right side of the tank is basically just a growing out space for various stems including Ludwigia sp. ‘Araguaia‘, Rotala sp. ‘Araguaia’, Blyxa alternifolius, Rotala sp. ‘Mini Type I’, and a Limnophila species. Due to all of these plants, I don’t envision this tank ever becoming a cohesive aquascape unless I’m able to setup a farm tank to transfer some of these out. The main thing, is that I’m quite impressed by the substrate sustained growth, with zero dosing. Comments welcome!

In a 20L aquarium, I have a small colony of Threadfin Rainbowfish, Iriatherina werneri, that I’m attempting to breed. These blue-eyes are beautiful fish that I’m hoping to eventually have a huge school for my 75G aquarium. The males are especially brilliant, displaying long fins, which they use constantly to prove their dominance to other males, and to impress females.

The males also tend to get a striking headlamp, a bright yellow/orange stripe along the top of their head, when they’re courting females. The females are not pictures here, but they do not have the elongated fins that the males do. It’s quite easy to tell them apart due to the noticable difference in finage.

As you can see from the backgrounds in these pictures, I’ve been using spawning mops made from acrylic yarn to try and harvest eggs. The goal is to float these mops, have the fish lay eggs, and then remove the mop and place it into a hatching/rearing tank. By cycling two mops between these tank every 10-14 days, I hope to constantly have new fry. So far, I’ve been successful, but only on a very small scale.

The fry are absolutely tiny when they first hatch; no more than a millimeter or two long. Right now, I have a couple that are 5-6mm long, but recently lost some to a Hydra infestation. I feed the newly hatched fry GP 5micron powder, which besides green water is just about the only thing that will fit in their tiny mouths. I’ve started feeding the larger fry some baby brine shrimp. Hopefully, they’ll grow up fast, and will be able to go in with the adults soon. If anyone’s successfully bred and raised these fish, I’d love to hear some advise.

Two weeks ago, I posted a rather pathetic version of my 2.5G aquascape. I got some great comments from everyone, and have updated the scape in a few areas. It’s amazing the difference that the Blyxa japonica, in particular, makes in this scape in the back left. Otherwise, I added some Anubias barteri var. ‘nana’ and moved all of the Java Fern to the right side of the tank. What do you think?

I also decided to practice some of my photography skills for this picture. With these smaller tanks, you really have the luxury of being able to flash the heck out of the whole tank evenly, using just a couple of strobes. You can see my setup below. I sat one flash on top of the light fixture pointing upward into a domed piece of computer paper. The dome reflects the flash down the back of the tank, illuminating the white paper background sitting about 3-4 inches behind the aquarium.

Then, I have a second strobe suspended, using an improvised snoot to focus the light into the tank, which illuminates the front of the scape, which would normally be shaded by the rocks. Of course, the aquarium light itself provides pretty decent light as well, so these strobes are really just for a bit extra refinement. Any suggestions?