Fallow period enough?

[WesternSpyKolya]

Sorry if this seems like a stupid question but I'm genuinely concerned, so in the past I lost all my fish to either ick or velvet (it was one or the other) so I completely left my tank fishless for a very long time (coral only), but due to a lightning issue all of my coral died (light became too bright and killed all of them when I was on vacation). This was during December, during August I decided to RIP clean my tank (I rinsed the sand with tap water at least 35 times) and decided to get back into reefing. The last time I had fish in my tank was 290 days ago (December 20, 2023) so therefore do you think if I had ich or velvet that it would be gone by now? I made a post about keeping a stonefish but couldn't get any in time therefore I opted for a devil scorpionfish instead and he's arriving tomorrow.

SG of my tank is 1.025-1.026 (I'll get an auto top off machine, but currently I do it manually and therefore there can be some fluctuations).

I completely changed out the water but the water in the sump was not refreshed when I cleaned out the tank (although I did clean the walls of the sump and the sponges in the sump) could it still be in there? I also have corals and they are all doing well and growing quite quickly.

Thank you in advance.

 

[EricR]

290 days is well beyond any fallow period I've ever seen suggested.

One thing to keep in mind is that, if you've introduced inverts (or any hard surface) recently, they could potentially bring in cysts, starting a new (short) parasite life cycle.

*search for "fallow" in the Fish Disease forum -- there's tons of threads,,, maybe one of the sticky threads at the top covers this more deeply

 

[Reef_at_Sea]

Sorry if this seems like a stupid question but I'm genuinely concerned, so in the past I lost all my fish to either ick or velvet (it was one or the other) so I completely left my tank fishless for a very long time (coral only), but due to a lightning issue all of my coral died (light became too bright and killed all of them when I was on vacation). This was during December, during August I decided to RIP clean my tank (I rinsed the sand with tap water at least 35 times) and decided to get back into reefing. The last time I had fish in my tank was 290 days ago (December 20, 2023) so therefore do you think if I had ich or velvet that it would be gone by now? I made a post about keeping a stonefish but couldn't get any in time therefore I opted for a devil scorpionfish instead and he's arriving tomorrow.

SG of my tank is 1.025-1.026 (I'll get an auto top off machine, but currently I do it manually and therefore there can be some fluctuations).

I completely changed out the water but the water in the sump was not refreshed when I cleaned out the tank (although I did clean the walls of the sump and the sponges in the sump) could it still be in there? I also have corals and they are all doing well and growing quite quickly.

Thank you in advance.

Should be good, just make sure you QT your new fish or have it quarantined before adding it to your tank.
On the other hand, your new corals could have added a disease in your tank allready, anything you add can carry something.

 

[WesternSpyKolya]

Alright, thank you so much. Corals were bought from a fishless tank, so I don't know if there is ich on them. But I'm glad to hear that the fallow period will be enough.