Also, remove valonia by hand as much as you can. Pop it, scrub it off, etc. The key is removing all of the tissue. You can also make a bubble algae siphon by taking a piece of rigid tubing (1/2" or 3/8"), cut a 45 on one end, put the other in vinyl or silicone tubing and siphon into a filter sock in the sump, while siphoning and stabbing the algae, the sharp end will dislodge the algae and it siphons directly into the filter sock.
There are no spores in valonia, so there's absolutely no risk of it spreading because you pop it, it spreads by the exterior tissue.
#2 is very uncommon in aquaria, so much so that it's nothing I would be concerned about (which is why I didn't mention it) unless there's an extreme amount that's been growing for a very long time. In any case, whether it be by hand or a fishes mouth, the risk is the same (next to zero). I don't know of any example where a herbivore (fish) was employed that ate valonia and it exploded beyond its appetite. The common issue is using emerald crabs, where the crabs just can't keep up with the growth or there are too many other food sources for them to focus on just one algae.Not entirely true. Valonia can reproduce sexually in addition to what it does most often: asexually budding off new bubbles. Popping a Valonia going sexual or about to go sexual would release gametes that can cause a bunch of new bubble algae. Two important considerations:
1. I understand (admittedly only through reading and no expert knowledge) this happens most often when a Valonia bubble is quite large, so popping smaller bubbles is less likely to catch the Valonia in this phase.
2. If the Valonia is going sexual, it was probably going to release all those gametes in any case.
Note: in the case of #2, complete removal of the bubble without popping would in theory prevent the spread from that bubble going sexual. So there may be some benefit to the grueling task of removing bubbles without popping them. I'll let the user judge the cost benefit ratio though!
I don't think you are being argumentative. I think we think the same thing. My understanding is that bubbles get BIG before producing gametes, so unlikely to be a scenario most reefers encounter. I should check up on that, though, because it's been a couple years. In any case, I'm just being pedantic#2 is very uncommon in aquaria, so much so that it's nothing I would be concerned about (which is why I didn't mention it) unless there's an extreme amount that's been growing for a very long time. In any case, whether it be by hand or a fishes mouth, the risk is the same (next to zero). I don't know of any example where a herbivore (fish) was employed that ate valonia and it exploded beyond its appetite. The common issue is using emerald crabs, where the crabs just can't keep up with the growth or there are too many other food sources for them to focus on just one algae.
There are other herbivores (fish) that consume valonia, common sailfin tang being one, certain naso tangs also have eaten it, but with fish, there's always a chance it doesn't eat it. As mentioned, rabbitfish in general will most likely be the best herbivore for any serious outbreaks (besides manual removal).
Sorry, not trying to argue, just pointing out the reality and my experience (along with many others) dealing with valonia.
I don't think you are being argumentative. I think we think the same thing. My understanding is that bubbles get BIG before producing gametes, so unlikely to be a scenario most reefers encounter. I should check up on that, though, because it's been a couple years. In any case, I'm just being pedantic![]()
