So the CO² continued longer than I was expecting. The working pressure has started to drop now though, so I'll need to refill it but 9 weeks seems pretty good to me. I've got mostly epiphytes and the few stems I have are still struggling despite the addition of CO². I think the stems might be lacking light though more than anything else.
The trident fern and mini christmas moss have shown the greatest change since adding CO². The mini christmas moss has grown really compact without any intervention and the trident fern has grown! It never did much before but now at the end of the CO² period it looks quite healthy.
I've not changed anything else in the last 9 weeks as I wanted to see what impact CO² had. I was expecting faster plant growth and higher nutrient uptake pretty much instantly but although plant growth increased quite quickly my TDS readings haven't really changed. This was until about a week maybe two ago. I noticed some of my buces becoming quite colourful (I think it's nutrient deficiency). When I tested my TDS it's only a little above what it is after a water change so time to up the ferts I think.
Now on to the fish!
The guy I got my corries from decided to sell off his breeding group of habrosus. So I had to have them. While we were looking round all his tanks he spotted that his C.nanus had spawned. As he wasn't going to raise anymore he offered me the eggs.
Unfortunately snails got to them overnight and they munched most of them but I did get a few fry. A few were deformed or just not swimming particularly well and I thought it was a bit of a loss, so I moved some luminatus fry into the breeder box and pretty much forgot about the C.nanus.
I pulled the luminatus fry out a couple of days ago and spotted a small Cory wiggling around at the bottom. So not the greatest success but at least I've got some experience now for when I can hopefully get the other Corys to spawn myself.