210 gallon Frontosa build

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Alright, time for an update:

First, some good news - my smallest fish, the runt I’ve been worrying about off and on, has bounced back again. He’s definitely the low man on the totem pole of the tank, but he’s swimming around jostling for food now with the rest of them. No more discoloration and heavy breathing under a rock.

Since the tragic loss of Homer, I’ve implemented some changes. I’ve realized my KH and GH were crashing due to a springtime change in my well water due to melt. While the African cichlid substrate and stones were buffering it upwards throughout the week, I’m guessing those weekly fluctuations were what was causing the stress symptoms.

I’ve very slowly dosed the tank with Cichlid Lake Salt and Malawi Buffer to get back to where my numbers were in the summer: 8.2 PH, 13 GH, 10 KH. This is the result of (over time) approximately 7 tablespoons of Malawi Buffer and 4 tablespoons of Lake Salt. On my next 25% water change, I will slowly replace 25% of that amount of salts throughout the change - measuring my levels before and afterwards.

Maybe it’s wishful thinking, but my 4 remaining fish seem much happier at these parameters. They are F1s, so perhaps they are use to the harder water. I wish I made the change when I noticed the first fish starting to flash a few months ago. 😢

As for these four, there are two approximately the same size - around 3.5 inches; and the smaller ones are 2.5 and 2 inches respectively. Extremely slow growers! My mother visited today and asked if they’ve grown at all since I got them back in August. Is this normal? I know they have grown - but so slow.

They seem to be getting along for now, so I might avoid adding some more juveniles at the moment. Ideally, I’d like to wind up with 1-2 males and 4 females. So depending on how things shake out, I might just procure 2-3 sexed females sometime down the road. I could be convinced out of this, though, as I’ve been mulling over ordering another 4 juveniles for the Spring. The only problem is that if I wound up with too many males I’d need somewhere to unload them, and I live rurally.

And some images for your viewing pleasure:

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Yesterday, I did a water change and tested out my new regime.

I drained 25% of the water from the tank, and filled it up from the tap using my python. The tank water before the water change measured at: 8.2 PH, 11 GH, 10 KH.

During the fill-up, I pre-mixed 1 tbsp of Cichlid Lake Salt and slowly added it to the tank. I also mixed 1.75 tablespoons of Malawi Buffer and did the same. I chose the Malawi Buffer rather than the Tanganyika Buffer because it is more similar to my base water, and I’m not attempting to “case PH” - rather, I’m trying to maintain stability. I based my calculations on 25% of the dose for my tank size - in my mind, 25% of water coming out means I need to replace 25% of the salts.

In any case, immediately after the water change my parameters were as follows: 7.8 PH, 11 GH, 10 KH.

In terms of behavior, during the change and while adding the salts I did see a bit of flashing. There was also an unusually high amount of chasing between the fish immediately following the water change. Both of these things settled out within the hour, though.

This morning I tested the water again and got: 8 PH, 11 GH, 10 KH.

All in all, I’m pretty happy with the results as it looks like it’s remaining stable. The fish seem good today. I might stick with the bi-weekly water changes for awhile, as with just the four small fish in the 210 gallon they don’t produce any detectable nitrates during the week. But I realize this will need to increase as they get larger.

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Haven’t read through the entire thing but definitely keep watching the parameters overtime and see how consistent it is. I kept f1 Kigomas from babies to adults that I was breeding for a period. I had 150gal for mine. I started with 12. Where I live my water parameters are actually really good for keep them so I never had to add much of anything. Knowing your water parameters in tank vs what is coming in is definitely important to reduce the stress. I kept mine to bi weekly changes at 25%. The bio load wasn’t to bad. I did run dual ocean clears on mine for both mechanical and biological filtration. I never did the filters on the same week as the water change, they would be done on an off week. I am not sure what you have space for but when I had saltwater I had a barrel I kept next to it with a mini pump and aerator. I always pre made my water then pumped it over on water change days to make sure it wouldn’t stress anything out. It could be an option for fresh water to if you are worried about direct tap stress.
 
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