April’s Modified Fluval 13.5 Build!

crazypants

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Hi all! I’m getting back into the hobby! Even though the 13.5 is an AIO, I wanted to add a sump for additional water volume and filtration. I had a couple of 10 gallons hanging around so I set one up with an Amazon sump baffle kit. I looked into all kinds of over-glass U-shaped siphon designs and decided I’m gonna learn how to drill glass. Well, turns out it’s not that difficult, so I’ve drilled two holes in the tank and two holes in the lids of my phyto/pod jars

Anyway I’ve always wanted a bare bottom display so I went that route, with the plan to make a diverse refugium. I’ve repurposed the AIO area a bit, with the first chamber holding the main heater, and the third chamber running the stock pump as additional flow, through a new hole that I drilled in the separator plate. The middle chamber has the original filter media and tbh I don’t know if I’ll change that later, or just leave that alone.

Heading toward the sump, I made a 1/2in durso standpipe that terminates into flex tube. This drains into a filter sock on a bracket in the sump first chamber. I also added a bunch of filter media logs in that chamber for bacteria n stuff. Second chamber is the refugium. I added live sand, a bunch of shells and rocks I collected from the beach last year, a small piece of driftwood and caulerpa prolifera. Third chamber is just the pump, but I have ideas for later. The pump is a syncra 1.5. The return line comes into the tank via the other hole in the glass, and is piped out into the display area through the original pump outlet hole in the divider plate.

The phyto/pod jars are lit by the fuge light and can drain into the sump when I send the secondary tube into the water and force all airflow into one jar. It works great!

All the stuff is controlled by Kasa and alexa. I can tell Alexa to turn off/on this or that on demand. It’s super useful when your hands are wet or you’re holding something and realize you need the pumps off, like, immediately!

The tank is still pretty young in its development, so I’ve got the typical diatoms and such of various colors showing up. The sump is the main focus, with red dust in a few spots on the sand. I have some yellow here and there on the rocks in the display, and some brown on the sand, but it’s not very obvious or overwhelming.

The corals were sold to me at a discount since the owner was hooking me up for first build, and that was sweet! I got a Xenia, a simpodium, a blue dot mushroom, and some mystery critter that could be GSP, but not sure because it’s so tiny.

Thanks! More to come later!

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crazypants

crazypants

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There’s been some changes: The Fluval stock light was really ticking off the sympodium and it was still mostly closed after almost a month, so knowing I’d get one eventually anyway, I got the AI prime and a clear lid. I loooove the look now, it’s fantastic! I have the AI hood thing on order too, so the light won’t bleed as much into the room. Right now I don’t plan to use the diffuser. The sympodium is still acclimating but is already more open than it has been since I brought it home.
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This is a rock I’ve been acclimating in a glass of tank water and live sand for a few weeks, in the window. The pink star polyp/GSP whatever it is will eventually live on this at the bottom of the display. That cute little round ball of a rock will go in the glass next. I might put the GSP on the ball rock instead, idk yet. It’s growing fast though so I need to hurry up and get the other rock acclimated. It’s from the yard so this is why I’m aging it before I add it.
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This is multiplying polyps like crazy. It hasn’t made it to any of the current rocks yet, and I don’t plan to let it do so.
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crazypants

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I’ve got amphipods and copepods all over the place. I’ve even copepods kicking in the water column in the display. Amphipods show up throughout the day, and tiny ones are all over the glass if I don’t scrape for a while. I had a dinoflagellate outbreak in the sump, but it’s gone now, then a slimy bacterial bloom gunked up the tank, but that’s mostly subsided. My socks still overflow within a couple of days. The macroalgae in the sump is cycling though death and life, as new parts grow and old parts die. I think the tank is nutrient limited, and the macro is hitting its limit. I haven’t culled any, I’m just observing for now. I haven’t done a water change in several weeks. Salinity was low, then it was high, but now we’re holding steady at 0.26. ATO will be my next project, after Christmas is over. I’m mildly annoyed at doing the top-offs myself.
 
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crazypants

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The sump. It’s a mess, I know. Like I mentioned above, it’s cycling growth and death. It’s cool to see, but that’s also probably contributing to the sock overflow issue.

honestly surprised the phyto has survived despite my neglect. I dose a bit in the tank here and there, and that’s how my salinity accidentally increased over time, to 0.29. Oops. Anyway, I have some F2 in the fridge and I need to add some, and some water. My copepod culture is likely dead, but that’s ok. They colonized the tank successfully.
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In the refugium, there is a tiny mushroom in a glass dish, and an oyster shell with it, too. I cut it off of the frag plug that has the GSP. I’m waiting for the tiny mushroom to attach to the shell, then I’ll put it back in the display, on the bottom. It’s really neat to see it survive the sump light though. You truly can’t kill a mushroom.
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crazypants

crazypants

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AI is using Scully’s nano Saxby. I cut down the time an hour, and added a 2% UV + V moon for a few hours. It’s on day 2 of a 10 day acclimation period.
 

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Keeping it clean: Have you used a filter roller?

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