How many fish can I keep?

[@muj2012]

Another beautiful video thanks Lee 👍

[@boxtriker]

Excellent video Lee for one minute I was thinking you had a formula for it the age old question the one that cant be answered you put it over the best way I have seen for along time thanks for filming

[@leecalladine]

Thanks for the feedback. Your videos are very well done by the way. I hope you keep making them.

[@jordanyang3066]

excellent explanation. thank you good sir

[@richd-koi]

Brill vid Lee. I really like ur presentation as u get to the point n they r fun to watch. I have a 5500 litre pond with two large pressurised filters n two diy sieves at the top of my biohome shower filter. I only have fish that i like n each looks very different to the other 6 koi 5 butterfly koi 1 oranda which is the boss! 1 albino grass carp 1 black moor n 1 albino weather loach. They all get along n the water is good quality after reducing fish numbers n increasing filtration. May add a k1 static bed as they grow in the coming years.

[@leecalladine]

Thanks for the feedback. I try to keep my videos relevant. I try to impart as much information as possible.

[@monteiro3977]

Good night, I like to apply a simple rule to goldfish. 1200cm2 for fancy and 2400cm2 for elongated fin, this calculation applies with 1 liter of midea per adult fish and a 10 times per hour renewal going through the mideas...

[@JamesTHEKOIwhisperer123]

Good video again lee

[@leecalladine]

Glad you liked it. More on the way soon.

[@Chequr_Prostate]

What’s the maximum size Koi that you should have in say a 1000 gallon pond.?

[@leecalladine]

24in is a large koi in a 1000 gallon.

[@sage6336]

one adult koi /1000 in a well filtered pond with pristine water

[@andy8315]

Hello lee if you had 4,000 litres would this mean you can keep 8 koi or less..

[@leecalladine]

Yes. But it's very much a case of it depends.

[@dmitrimikrioukov5935]

I follow the formula that fish should weigh no more than 1/1000 of the water. For long-bodied goldfish the general weight formula is length x length x length x 1,7 / 100. So, for example, a 10 cm long comet goldfish will weigh 10x10x10x1.7/100=17 g. It should live in a tank of at least 17 litres. I keep mine in 35 litres.

[@leecalladine]

A perfectly reasonable suggestion. Does a good job of approximating the weight. By this system you would have a 39cm koi per 1,000 ltrs? give or take.

[@dmitrimikrioukov5935]

@@leecalladine Seems so.

[@leeoliver4063]

I have 1600gallons to 20 fish from 6inch to 18 inch so im going bigger now

[@Riley095]

I personally see it like this. 1000 gallons per koi then add on 5000 gallons after that.

[@leecalladine]

That would be perfect for the Koi. Plenty of space for each fish. But most people would stock much heavier.

[@Riley095]

@@leecalladine yeah true. Also I'm just talking about the ideal most people cannot meet that.

[@stewartgoodchild2930]

Hi Lee, can You help, I live in a hostel in Manchester, We have just built a pond above ground level, I don't know the dimensions right now, it's approximately 4000 litres, We have goldfish, maybe 3", 3koi, 2 tench, all about the same size, in total I think 38 fish, can I obtain an ammonia tester?, as the filter system is run through a homemade wheelie bin, We have a 10,000 litre pump that flows over a waterfall but no extra areition, any input welcome, Thanks.

[@leecalladine]

Ammonia test kits widely available through any aquatic retailer.

[@stewartgoodchild2930]

@@leecalladine Thanks Lee, sorry it's late, can I just ask, what time to slow feeding in the year?, they are still active and know food is coming, its gone in about 5 minutes, I don't want to pollute the water, they are having tetra pond sticks supplemented with prawns approx 8 hours later.

[@leecalladine]

@@stewartgoodchild2930 Keep feeding the fish. Just reduced the amount. Consider switching to a wheatgerm based food. When the fish are not interested in the food stop feeding until the spring.

[@stewartgoodchild2930]

@@leecalladine Thanks Lee, will do.