AJ's 40g breeder mixed

HARDY CORALS

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11/20/2025
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9/1/2025 picture.

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Well I have avoided showing anyone my DIY drilled 40 gallon breeder. It is now 17 months old and my confidence is getting higher. For the longest time my stand was just 2x4's, and deck screws. Now it has a more finished look. The stand to this day needs a real door but carpentry seems to not be my forte, so I put up a curtain and called it done haha.

In the beginning my sump was just a 10g tank with no filter media or anything (just more water haha). Then I switched it to a free13.5g fluval AIO HAHAHA as you can imagine an AIO as my sump had some variables and complications. Presently the sump is a 20 gallon trigger systems saphire 26, with a vectra S2 return pump. 1 gallon of marinepure bioballs in the sump chamber. Chaeto growing in my refugium under an AI blade refug light.

My first light was not very capable, I do not remember the brand (found it at petco where I bought my breeder). Presently I run 2x AI prime 16s. I use one of the preloaded templates.

Started with 40-50lbs dry rock, 2 Inch sand bed (Fiji pink if I remember right). My first livestock, 3 clownfish quickly became 2 clown fish after some aggression. My first coral at about 45 days was a petco special wall hammer, it did not survive long haha. My second coral was petco GSP (I have this still today haha). Needless to say I learned almost everything the hard way.

Presently I have 5 clownfish, 1 lawnmower blenny, 1 diamond watchman goby, 1 cleaner shrimp, 1 peppermint shrimp, 12 zoanthid types (by far my favorite corals), rhodactis mushrooms, mantipora (i think), duncan, galaxea, frammer, torch, GSP. Things seem stable and happy, and I look forward to digging up some old pictures to show on this forum.
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Gumbies R Us

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Do you have any aggression issues with the clownfish?
 
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HARDY CORALS

HARDY CORALS

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Do you have any aggression issues with the clownfish?
I did and it took a bit of help from the local fish store. I started with three like a noob haha. Instead of removing, I added 4 more for 7 total and changed my aquascape. I overfeed to minimize crankiness. I had 2 that did not adjust, but the LFS was letting me bring them in if they didn't adjust. Today I still have 5, they get slightly grumpy if I forget a feeding, but get along pretty good. 2 are definitely the dominant pair, the other 3 kind of roam together.
 

Gumbies R Us

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I did and it took a bit of help from the local fish store. I started with three like a noob haha. Instead of removing, I added 4 more for 7 total and changed my aquascape. I overfeed to minimize crankiness. I had 2 that did not adjust, but the LFS was letting me bring them in if they didn't adjust. Today I still have 5, they get slightly grumpy if I forget a feeding, but get along pretty good. 2 are definitely the dominant pair, the other 3 kind of roam together.
I'm impressed you are able to have five in there with minimal aggression!
 

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Cool setup! The 40 breeder I think is the perfect size for a reef tank.
 
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HARDY CORALS

HARDY CORALS

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Been a while and I finally grabbed a lens to take better pictures!!!!!
 

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HARDY CORALS

HARDY CORALS

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It has finally happened. My tank has been doing too good and I have possibly added too many coral specimens. A couple of my corals started to seem.... "droopy I guess for lack of a better term." I started to pay much closer attention to calcium and alkalinity. And alk especially seems to come up low. Not 100 percent sure how to set this stuff up... or even where I'm going to stash it. I do know I'm excited to take my reef to another level and learn a little bit more.
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P.S. I still have 5 clowns with minimum aggression, possibly no aggression observed anymore.
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HARDY CORALS

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Just a quick update. I have been cycling my new Eshopps M100 for 17 days. It will be an upgrade for this reef. I have been writing as much as possible about that build here.

Thread 'AJs Eshopps Mariner 100' https://www.reef2reef.com/threads/ajs-eshopps-mariner-100.1127402/

I have collected a couple fish for the new tank, and am temporarily letting them hang out in the breeder. Im hoping to be able to start moving my reef across the room in a couple more weeks.

I might set this breeder up in my garage by the mixing station to be a frag tank. Here is a current picture or two of how my little reef is doing.

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