16G Nano tank enough?

selvin · Aug 31, 2021

I have a 16G nano tank with internal filter and no skimmer. The fish count is 5 includes 2 clowns, 2 scissor tail and 1bicolor blenny. Tank has completed 8 months now with the clowns being the first tenant followed by damsels for around 5 months and blenny 1 month. I also have 2 bubble tip anemones a small colony of zoanthids which is with me for around 5 months.
Also in display area i have around 8kgs of rocks and sand bed for 2-3 inches (50% from my old tank). The filter media is mostly ceramic rings (which i have transferred from my old tank of 4 months), crushed rocks, some bio balls and the tank seems to be doing fine except for zoanthids. LFS has advised me to dose calcium, iron and magnesium for the zoa to improve its health so i have got those in tab form and put in the tank a week ago, also i have moved the zoa to a place with high lighting, no visible change in them as of now. I feed the tank 4 drops of Korallfluid once a week since i am not sure if it will increase the phosphate levels and i do not check them.(advised is 10 drops for 100 liter/21 gallon tank everyday).

Have got this light for tank since it had good reviews.

Fish & coral foods include also a pack of small pellets which the lfs sells with its name on it.

Wanted to know if this is enough bio load for the tank size or can i reduce them? any other advice, feedback is always welcome.

Bribo12 · Aug 31, 2021

That’s a lot of fish for a small tank. I have 2 in my 20 gallon and maybe will add one more and my tanks a year old. Are you testing for anything? I wouldn’t dose anything until you know what your numbers are. I see a semi happy brown bubble tip and a super unhappy bleached bubble tip.
Definitely test for nitrate, phosphate, alk, calcium and magnesium. Stop dosing and I’d probably add a bit more rock as well.

James M · Aug 31, 2021

If you’re not testing your parameters I would not be dropping in tablets or dosing anything. And that light is not strong for any coral or anemones. Unfortunately the smaller anemone is bleached

selvin · Aug 31, 2021

Bribo12 said:
That’s a lot of fish for a small tank. I have 2 in my 20 gallon and maybe will add one more and my tanks a year old. Are you testing for anything? I wouldn’t dose anything until you know what your numbers are. I see a semi happy brown bubble tip and a super unhappy bleached bubble tip.
Definitely test for nitrate, phosphate, alk, calcium and magnesium. Stop dosing and I’d probably add a bit more rock as well.

Yeah could'nt help with the fish, all three expect the clowns are impulse buys...oh is he bleached? can i do anything about it? he doesnt look bleached under blue lights...maybe the focus is not proper. I check for ammonia, nitrate & nitrite.