It depends on the defintion of difficult. I can perhaps shed some light in a picture. I had a sea star die in my tank last week. 30% of my zooanthid corals probably died. I had to go into 'emergency tank mode (dead animals can poison your tank)'. My evening work included the following:
1) Make 5 gallons of SW the day or so before
2) Check the s.g/salinity of the fresh made SW and the tank water
3) Topoff the tank with RO water to match up s.g.s
4) Stop all pumps and disconnect heater
5) Remove 4 gallons of SW and while doing:
--pull out the chaeto (macroalgae) and place in a separate bucket
-vacuum the sand, especially where the star died
--vacuum the back sumps
6) Clean the pump intake guard of chaeto and debris and replace
7) Pull out all filter media and replace them
8) Scrape algae of the submersible fuge light and replace the chaeto
9) Refill the tank with SW
10) Restart all pumps and heater
11) Clean the glass and floor
12) Repeat steps 1,2,3,4,5,9,10,11 several times last week until nitrates cleared and the corals appeared better.
Is this 'hard work' or a labor of love? I don't know. Does it take up time? Yes. Granted, my tank is a 24G and a 75G SW tank would probably have not budged much. Nano's require, in different ways, more work, not that a 75G tank is easy either nor had headaches of it's own.
Having come over from FW only a few months ago, here is how I call it:
1) Much more expensive hobby
2) More involved tank upkeep
3) Much more equipment involved, and, perhaps, let's say a wider base of aquarium knowledge needed
4) Livestock less forgiving of mistakes
5) BETTER COLORS
6) MORE FASCINATING
7) LIMITLESS STUFF TO WATCH IN YOUR TANK
8) MORE DIVERSE MARINE LIFE. CORALS ARE AMAZING.R
9) WHEN YOUR TANK IS UP AND RUNNING, MAN, WHAT A SIGHT.
JMO. SH
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