Fluval Flex 32.5 Small octopus

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Jan 18, 2021
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I had originally thought to buy am larger aquarium, but decided to start smaller and get some experience with a salt water aquarium before getting an octopus.

I have a Fluval Flex 32.5 US Gal Aquarium. https://fluvalaquatics.com/us/flex-32/

The aquarium has been cycled and has 4 Blue Green Chromis. I will be adding several fish for the grandchildren. The fish will be removed before I get an octopus. I also have a terrarium with several Fiddler crabs in waiting.

All this is in preparation for an octopus. The Fluval Flex 32.5 comes with a built 3-stage, two chamber filter area.

To the built in filter system I have added a felt Filter (sheet) as a new first stage.

The first built-in filter is a large foam mechanical filter. This is followed by a carbon filter. The last filter before the protein skimmer is a Fluval Biomax filter.

The protein skimmer is a Fluval Sea PS 1 Protein Skimmer

At present the 50 watt Fluval Heater keeps the tank temperature at 22° C

The circulation pump is 214 US Gal/h.

I have been using the ATC refractometer as well as the Hanna HI98319 tester to measure salinity

I also use a “Saltwater Master Test Kit” to measure the Ammonia, Nitrite, Nitrate and ph values.

Temperature: 22° C, Salinity: 28, Ammonia:0.1, Nitrite:0, Nitrate:0, ph: 7.8

I have a 40 gallon RODI system to provide water for water changes.

To prevent the octopus from escaping I have added reinforcement around the filter area and filled any gaps with “Square Large Foam”.
The attached pictures show the aquarium and a top view showing the Skimmer.
 

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tonmo

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nice setup, and thanks for sharing all the specs! Traditionally 32g is considered too small for an octopus, but I do understand it depends on species so there are exceptions... The problem with this is that it's very hard to get a confirmed species from an LFS -- they'll often attempt to identify it, but almost just as often get it wrong.
 

sedna

Larger Pacific Striped Octopus
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Looks like a great set up for dwarf species! As Tonmo points out, it’s hard to get a good ID from suppliers, but as long as you stick with dwarf species you should be fine. You’re off to a great start. I love my smaller Fluval EVO tanks, so I’m really going to enjoy following your progress with this one.
 
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I decided to wait a while before getting the octopus, so bought a Cleanup Crew online from a reputable dealer, But!

I could not tell if all were alive. The dealer told me that it can take up to three days for all the critters to acclimate. That was surely correct for the Astraea Snails which took a long while to show movement. The Blue Leg Hermits and Nassarius Snails were all very active.

I waited; many of the Astraea Turbo Snails were dead and several of the Scarlet Reef Hermits. The Blue Leg Hermits and Nassarius Snails all seemed to live or at least most of them.

The crisis came when I removed the dead ones, Boy what a stink, Boy what a stink!

I measured the chemistry. I have been monitoring the chemistry every day and all the values were low.

Now the Nitrate was sky-high. I did a 40% water change to get things back to normal.

All the fish survived, but two Scarlet Reef Hermits died, I’m still waiting to see how this crisis ends.

I’ll buy all my critters local in the future, where I can see they are alive from the get-go.
 

sedna

Larger Pacific Striped Octopus
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I decided to wait a while before getting the octopus, so bought a Cleanup Crew online from a reputable dealer, But!

I could not tell if all were alive. The dealer told me that it can take up to three days for all the critters to acclimate. That was surely correct for the Astraea Snails which took a long while to show movement. The Blue Leg Hermits and Nassarius Snails were all very active.

I waited; many of the Astraea Turbo Snails were dead and several of the Scarlet Reef Hermits. The Blue Leg Hermits and Nassarius Snails all seemed to live or at least most of them.

The crisis came when I removed the dead ones, Boy what a stink, Boy what a stink!

I measured the chemistry. I have been monitoring the chemistry every day and all the values were low.

Now the Nitrate was sky-high. I did a 40% water change to get things back to normal.

All the fish survived, but two Scarlet Reef Hermits died, I’m still waiting to see how this crisis ends.

I’ll buy all my critters local in the future, where I can see they are alive from the get-go.
I know it can be disheartening, but you’re making the best choice in waiting! If it’s a Caribbean species you’re after, it’s better to wait until April, anyway- when the younger ones are available!
 
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The brown Pacific Octopus arrived today.

The arms are about 1 ½ inches long when stretching out.
The acclimation was done in 1 1/2 hours and the octopus, in its pipe, were put in the aquarium.
After about 10 minutes the octopus moved out to find a new home under one of the rocks.
11:32 still in pipe, getting ready to leave.
11:45 in the new home under a rock.
The octopus has stayed under the rock and is moving the substrate to make more room and possibly to make smaller entrance.
I gave the octopus a small piece of raw shrimp from the supermarket.
So far the octopus has rejected the shrimp.
I have ordered some small Blue Leg crabs and ghost shrimp for the next feeding.
 

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sedna

Larger Pacific Striped Octopus
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Congratulations on your new friend! Sounds like things are going well. I’m not surprised it didn’t want to eat right away, that’s not uncommon. You could try some shrimp again tomorrow. Keep us updated!
 
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I set up a small webcam last night. The octopus came out as soon as we went to bed and surveyed the aquarium. I have some poor videos take in almost no light.

This morning the octopus was not to be found.

I received the Blue Leg Hermit crabs and the Ghost Feeder Shrimp from the Salty Bottom Reef Company this morning, so I have something to feed the small critter.

I now I’ll see if I can raise the food for the octopus as well: 1. Fiddler crabs, 2. Blue Leg Hermit crabs and Ghost Feeder Shrimp.
 
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Jan 18, 2021
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It has taken two months but Harley finally has been out so we can see her.

I have started putting up the Harley videos on my YouTube channel.

YouTube search 'keithelkin channel' then hit the name keithElkin to see just my videos.
 

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