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NeilU

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Hello all. I just set up a 40g IM Nuvo Fusion Mini AIO tank for my first octopus. Will run a Comline DOC skimmer. My question. I have a 180g mixed reef DT for several years. I do 25% water changes every 2 weeks on the 180g. Instead of cycling a new tank for 3 months, I'm thinking of taking water from my DT with extra live rock I have and live sand I keep in my sump and move it into the new 40g tank. I keep the salinity in my DT at 1.025 and all other levers are very good. Does this sound like a reasonable option to avoid the 3 month cycle? thank you for your advice.
 

tonmo

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Welcome to TONMO @NeilU, and thanks for joining! I'll let our resident experts weigh in; I'm not sure there are short-cuts to cycling... even with transferred contents you may need some settle time? Let's see what they say. You'll also want to beware of a 40g; depending on the species I've often heard 55g is the floor.
 

DWhatley

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Great way to start up a tank but not really a way to short cut the growth of enough bacteria to convert a large predator's waste. Even after you place all the live (water might be better if new, not much advantage to established tank water unless you need to immediately match an environment). you will need to feed the bacteria to grow enough for handling the octo's mess.
 

Nancy

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Yes, I tried this once with live rock from another tank, new sand and half old water, half new. It was some time before the water parameters were good enough for inhabitants.

Nancy
 

NeilU

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If my established mixed 180 DT has a variety of fish, inverts etc, wouldn’t the water live sand and rock I move to the 40g have the bacteria needed for the octopus? Would I still need to cycle for 3 months or a shorter period would be sufficient? Do I sound excited and anxious to acquire my newest family member? Lol
 

DWhatley

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We don't have a good test for knowing when a tank is "ready" but putting a small shrimp in the tank and monitoring the ammonia/nitrite as it decays might be a useful method. I have not experimented with this idea but the thought is that you should not ever see ammonia or nitrite if the bacteria has grown enough to handle the decay.
 

NeilU

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We don't have a good test for knowing when a tank is "ready" but putting a small shrimp in the tank and monitoring the ammonia/nitrite as it decays might be a useful method. I have not experimented with this idea but the thought is that you should not ever see ammonia or nitrite if the bacteria has grown enough to handle the decay.
Sounds like a plan to me. thank you
 



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