Fluval flex 123L

Reefnoob97

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Hey all, I've just recently purchased a fluval flex 123L. After a bit of help/recommendations on a couple of things
1. Decent protein skimmers that won't be too harsh on the bank
2. Any filtration upgrades people can suggest
Any photos of set ups etc would also be appreciated
Thankyou

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Bucs20fan

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The Fluval PS1 is like 80 dollars and would be a fine skimmer that looks good on that tank. I would upgrade the light in time if you can. The filtration is just fine on that tank, a good ole sponge, some poly fiber, and some matrix from seachem, and youll be rocking and rolling. I would recommend adding more rock. Youll need probably 20-30 lbs of rock for that tank.
 

ScubaFish802

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The Fluval PS1 is like 80 dollars and would be a fine skimmer that looks good on that tank. I would upgrade the light in time if you can. The filtration is just fine on that tank, a good ole sponge, some poly fiber, and some matrix from seachem, and youll be rocking and rolling. I would recommend adding more rock. Youll need probably 20-30 lbs of rock for that tank.
The fluval PS1 is known to be a not great skimmer - check out the reviews on other flex threads and groups - specifically surrounding the never ending micro bubbles. Check out Icecap like the K1nano (pump is not super great longevity wise, but overall functionality will far exceed the ps1) or the newer neo (smaller but basically the exact same thing as the nano - a little smaller overall).

The sponges that come with the tank are not a great filtration method. Check out inTank Aquatics or 3Deep media baskets with some filter floss in the top.

I no longer have my flex 123l (have since moved to a reefer 250), but that setup ran great for a couple years.
 
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Kasrift

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Agreed, the sponges aren't ideal. They would be a mess to clean as well. The InTank media racks are what most people will go with. If you are on the budget side, then there are lots of people that just build their own. I'd highly recommend looking into how to block the lower vents to help with filtration and surface scum.

I'd second avoiding the PS1 skimmer. You'll just replace it anyways. I've been looking at replacing mine after having it awhile.
 
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