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It did go away (most of it). The tank now has rock and fish in, still barebottom. No noticeable problems!

That's out of the water, on the rim of the tank, etc. What I'm talking about is on the bottom of the tank, inside it, submerged (as if it was little bits of sand). From what I gather, something "decanted" from the salt mix after being dissolved. What worries me is that might indicate that the...

I was setting up a new tank. Right now, it's only water (and the salt I added), and a HOB filter (no media in it) to mix the salt. Nothing more in it. I put in the needed salt amount, incrementally, before christmas. Left the HOB filter on. After 2 or 3 days, the water became clear, no...

Very nice tank! My idea was to keep only one, not a group. Adult coral catsharks are smaller than bamboos? I wanted one of those "less demanding" ones, such as these, because of the resources needed. Where I live my limitation is money, not so much space. I could fit here (outside, on my...

What is the minimum tank footprint and volume needed to house one long term?

I have an empty tank, 120g. 60''x20''x24''. I wanted to put a small shark, bamboo species probably. Some corals, not many rocks in order to get more space (bio media in sump), and some fish (ocellaris, tangs). Is it feasible? What species of sharks would be possible?

I saw some demo videos of this sealant. It is VERY clear, and would leave an impeccable finishing in an aquarium. But I don't know if it is ok for use to build a tank (in terms of toxicity and structural strength). Anyone has experience with this sealant...

Yes, it must vary wildly with ambient conditions. There is a member testing scrubbers as biofilters in this thread: https://www.monsterfishkeepers.com/forums/threads/algae-scrubber-as-bio-filter.670459/ Maybe it works the way he is planning it to?

I've been doing some research, and realized something: If we use plants, algae scrubbers, refugiums, etc, to lower nitrates, how do the plants actually reduce it? There's some resources stating that most plants go for ammonia as a nutrient (and if there's less ammonia, less of it is converted...

I followed joey's video when making my overflow: Same pipe diameter (1 inch overflow, 2 inch weir). Only difference is, I put in a ball valve after my T (but I'm keeping it fully open). My tank is 120g, with a 30g sump. The pump i'm using for the sump is 710gph (2700 lph). The problems I'm...

About 1 month without touching it. I was thinking about it, and the only thing I did that might have changed the bio was throw out the filter floss on the 1st stage, and replace it. Maybe most of my bio was in the filter floss, somehow, instead of being on the ceramic media? (I use JBL Micromec)...

I have an ammonia spoke in my tank right now, but I can't pinpoint why. I have two theories: 1- my tank didn't have it's water changed in a while (I got busy). I started doing 30% every other day last week, because there's discus in the tank, to help with growth. I didn't measure oh before, but...

I treated for a week. I'd love to take you up on your offer, but I need to check first imports and customs rules. I live in Brazil, and it's a ***** to import things here!

This seems like a very good solution! Is it safe for BN plecos and arowanas? My tank has discus (one in particular is symptomatic), bn plecos, one silver arowana, couple of severums and temporalis.

I've dosed prazi and metro in the recommended dosages in the water in my tank, and also done the treatment dosing the food. But, to no avail, some fish still exhibit stringy white poop and weird behavior. Both metro and prazi were in pill format (used for dogs). In my country aquarium specific...

I'll try to get a better one soon. He was at the back of the tank, and he's still small, so it was a little difficult to get a good pic. From the side, it's similar to pop eye.

He's isolated for now. I'm just worried that it's more than just the wound, as it's pretty ugly. I'll see if after this post, I can post a pic of it.

I would personally sterilize it all, and start from scratch. Use some bio accelerators, like Seachem Stability, to try and speed up the cycle a little. And try to use a plastic box, bucket, spare tank, etc as a quarantine before putting fish on your display. You can use a seeded sponge filter...

It seems to be from a fight, but i'm not certain. Can you help me ID the problem? Can't post the pic yet because of post limit. It's red, seems like a bruise, and swollen. No white stuff on it.

I think the problem was overstocking, on top of my weak filter. What probably happened is the tank accumulated ammonia gradually. I tested for nitrite and it had some, so probably some kind of mini cycle, as you mentioned. I'm finishing the build of a new stand and sump for this tank. I...