So I have been hinting at the fact that we were going to be merging some fish and corals from the 13 gallon in the 20 gallon into our new 38 gallon. Well I went ahead and started that yesterday. Now to preface this, I have had freshwater tanks for many many years, over 25 years just under 30 years. I have merged many of a freshwater tank into a larger freshwater tank with no problems to the plants to the inverts and to the fish. Saltwater is a whole other creature, species, world, Galaxy?
So mistakes were made, corals were harmed and at least one died; possibly more as two are in critical care.
There are a couple things that made this very difficult.
First, in the 13 gallon and in the 20 gallon we each had something that we wanted to remove and rehome so that meant catching them.
Second, catching those things meant pulling our live rock and some corals out of their tanks so we would be able to maneuver for the fish and dig out the pistol shrimp.
Third, we needed to put these live rocks and corals somewhere as a 38 gallon was not ready for them. As I had moved freshwater tanks many times I had a tub that I set up for the corals with a heater not thinking it through that they needed some type of water movement in their tub as well. So they were effectively sitting in heated stagnant water which is a huge no for corals. Hindsight is 20/20 right?
Fourth, we needed at least 20 gallons of salt water and I didn't have any salt at home and I didn't have any distilled water made so we decided to make a trip to our local fish store that offers saltwater by the gallon. This way we could rehome the fish and the shrimp and get the salt water at the same time. If would ever do this again, which I am not; I would have purchased the water ahead of this and not taking the time in the middle of the day to go run to the fish store for saltwater. Again hindsight is 20/20.
Fifth, six, seven, eight... Setting up the underground filter. Setting up the reverse filtration pumps. Setting up the new Fluval 307 and figuring out the tubing with the existing ultraviolet sterilization also from Fluval. The maneuvering of emptying the 20 gallon of water and going through the substrate to pull out as much bristle worms as we could (there were over 50 bristle worms of varying sizes from a quarter of an inch to almost 3", and some of them were extremely bristly. My sister said they were possibly fireworms which are supposed to be so painful that you are left in agony for a day or two) finding a heater for this tank as obviously the one from the 20 long wasn't strong enough, placing the substrate; both new and old, into the 38 and filling the tank with water a 3 gallon bucket at a time and realizing that you can't see anything right now plus it's after 8:00 at night and you are exhausted so there will be no finishing the tank tonight, no arranging the Coral in the tank, just the plop and drop so that the coral is in a tank with current and not sitting in the tub any longer. So you have to wait until the next day to arrange the tank and add the fish.
That brings us to today where we arranged the corals, got the clown fish, the blenny and the goblin fish in the tank and then had to clean up the huge mess that was made throughout this process.
For those not familiar with salt water. There is live bacteria that filters the water located within the live rocks and substrate in the tank. Now some people may argue that freshwater substrate contains a lot of bacteria more than the filter holds, but freshwater substrate is often non porous unless you are using something like Eco complete which is a volcanic rock and is porous so can house bacteria. So the substrate does not house the majority of your bacteria for freshwater tanks. Saltwater substrate can be sand but is usually crushed Coral which is porous and does hold beneficial bacteria. This is why we wanted to use as much of the substrate from the 20 long in the 38 gallon as we could. The filter for my tank is more for mechanical and chemical filtration than biological filtration. It also provides water movement in the tank, current that is much appreciated by all the life including the corals in the tank.
I am going to be adding another circulation pump to the tank for a little bit more water movement.