As promised, here is a picture of my 75G after some trimming and cleaning up. I didn’t end up changing the aquascape very much, but that will hopefully come before too long. I have changed the fauna in this tank, however. I managed to fish out about 15 Corydoras paleatus, which I sold in the catfish convention auction.

75G - Click picture for larger image.

I replaced them with about 60 Threadfin Rainbowfish (Iriatherina werneri) that I had kept in quarantine for the last few weeks. I also intend to fish out the Goo Obo Gudgeons from my 54G tank to turn this into more of an Australian/New Guinea themed tank. My hope is that the Gudgeons will breed without the Corydoras in there to disturb their eggs. We’ll see! Let me know if you have any suggestions for the aquascape.

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?

After an extremely busy couple of days preparing for and attending a family wedding, I managed to carve out some time to attend the All-Aquarium Catfish Convention auction. I was very pleased to be able to catch up with Dr. Devon Graham, who runs and operates Margarita Tours, which is the company I traveled to the Peruvian Amazon with in August 2007. In addition, from everyone I talked to, it sounds like the convention itself was a tremendous success. I’m very proud of GWAPA participating on Friday night with a workshop about planted-tank-friendly catfish, and representing with a beautiful informational display table. That was all made possible by the work of some very dedicated members.

The auction was huge, consisting of 10 lots of items. I brought 15 bags of plants and fish, and I suspect everyone else did similarly because there could be no less than 1000 items there. Plants, catfish, killies, cichlids, tanks, tools, equipment, it was all present. My only buy of the day was a fantastic grab, pulling 20 Bristlenosed Pleco juveniles for only $14. I have no idea what I’m going to do with all of those if they reach adulthood, but I’ll enjoy raising them up, possibly breeding them, and passing them onto other aquarists. I’d love to hear what everyone else in attendance came away with.

While at the reservoir last week, I spotted countless stems of Rotala ramosior growing emersed all throughout the dried lake bed. Out in the full sun, the plants were all a deep red color, with many flower buds along their stems. The flowers of Rotala ramosior, often called Tooth-Cup or Lowland Rotala, are small white flowers, that grow in large numbers along the stem.

Within a day or two of putting a few stems in my 40G aquarium, the plants began converting to submersed form, throwing out new green leaves. They also began side-shooting, forming side stems from the main trunk, also with green leaves. The leaves of Rotala ramosior have a very distinct vein down the center of the leaf, from tip to stem. The other veins are not nearly as prominent as the main central one.

Being native to over 90% of the states in the U.S., it’s amazing that Rotala ramosior is not more common in the hobby. It grows well, creates a nice bush like most Rotala species, and is attractive. I’m looking forward to growing it out further, and adding it to my collection.

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.