I shot
some more video of the tank. I'm just making sure I'm getting things right now. I turned the filter return flow the opposite direction on Thursday, I only actually moved the filter housing itself a short amount tonight. The WCMMs float more calmly in the middle now, especially during feeding. I fed some pea this evening and they were very lively, far more than they usually are - I've managed to get the temperature down to 22C according to the internal thermometer stuck to the glass, but the light might have helped a little too. I'm hoping that after turning the heater down to 19C, the tank should drop to 21C over night (I think it heats about 2C or so above where it's set, as it was at 20C and looked like the water was reading at 22C).
I'll stick to turning the light on during daylight, and then turning it off while other lights are on in the living room (and then dialling those lights down because I only usually have a lamp on anyway). The lighting hours...not completely decided on those. I turned it on at 2:30pm today and will turn it off at 9pm, it might be a good idea to go from ~12pm/1pm to 9pm so I can feed them while the light is on and see how much they are eating of what gets put in.
I filmed the Minnows a fair amount in case anything is wrong with them. I've never had the light on with them in there, so I do keep wondering. The one male Minnow does have a rather flat belly, but he has been like that for a long time now, going into last year; he clamps his fins quite a bit, but he is also lively, presents himself to the other male and the females, eats (not overly lots, but he does eat - I filmed part of the video after feeding the pea, and he's got a bumpy belly). I don't think he has internal parasites *touch wood*, for his belly to be that flat I figure he'd have to be pretty far gone if he did have parasites. Not that I've noticed the Minnows defecating the past week (the week before, when I rehomed the Clown Loach, I noticed signs of constipation on at least one female in trailing poo behind her), but then I might just not be looking at the right time and they're passing the feces properly now (and quickly).
I do think Minnows are an awkward fish when it comes to colouring, as many images on the internet show their gills as quite red, and their bodies can be redenned also (as in the case of at least one of the female Minnows). I do wonder if they actually have problems such as internal bacterial infections (as their bodies could appear redenned in that instance...and I'm wondering about the one female Minnow right now) or gill problems, but they are also all acting lively and eating plenty.
I did manage to kick up particles when I pruned some of the plants earlier, that might be visible in the video... The Minnows took a taste of that stuff and spit it back out. I'm aiming for 20-22 litres tomorrow in my water change, and also cleaning the filter and rotating the filter floss.