Crazy Bulk Mass of Koi

Increase Filter Size for Larger Koi Density

Will you look at that picture?

Isn’t that swirl of color amazing?

Usually, this many koi in a pond ends up in disaster. The fish produce too much waste and ammonia and nitrate levels in the water become too high.

Ammonia is the most significant dissolved waste in koi ponds. It is produced by fish wastes, rotting leftover food, and decomposing plant matter. The bacteria that exist in the biofilter convert ammonia first into nitrite and then into nitrate.

While ammonia and nitrite are highly toxic to fish, nitrate is much less so. However, as nitrate accumulates, fish will eventually be affected.

This is why we recommend placing an oversized filter on the pond, and vacuum out sediment on the bottom quite often.

Most people don’t want to spend the extra money on a filter. They would rather spend it on more fish! Yeah, we get it, but that is another reason we recommend a larger filter. People always add more fish then they should to a pond and then overfeed them.

Our filters are made to hold more biofilter to convert ammonia to the less harmful nitrate. This is important as ammonia and nitrite can kill koi fast. So having extra filter material to hold useful bacteria that break down these killers is important.

Our recommendation to clean the bottom removes dead plant material, wasted food, and sediment that contains the nitrates. So first waste that converts to ammonia and nitrite are removed then the less dangerous but still toxic nitrate is also removed.

We understand this is a pain to do frequently, but a clean pond makes for healthier fish.

Isn’t that what we all want?

As I have mentioned before in other posts, we do maintenance on many ponds. We have seen some crazy things. But nothing matches this for koi feeding. Those fish are eating koi pellets soaked in a solution of water and legal hormone alternatives. What are hormone alternatives? Read more here:, they are the same things that bodybuilders use to bulk up. Crazy Bulk Reviews says that ingredients are amino acids and such.

The owner dissolves the pills in water, adds some fish oil, and soaks the pellets in the solution until they absorb the liquid. He then dries out the mass, crumbles it up and feeds his koi with it once a week. He says that they grow faster and are more active than before he tried it.

We don’t recommend this, but the fish are healthy and as you can see from the photo very active.

I think it is the water changes, extra volume filter and clean pond that makes the fish the way they are.

But the customer is always right! As long as the fish are healthy that is!


Pink Water Lily Flower Blooming in Pond with Koi Swimming with Abstract Clouds Reflection in Water

Pink Water Lilies and Koi

Water lilies can be a valuable addition to koi ponds. Besides the obvious esthetic reasons, water lilies can add needed shade to a koi pond to provide shade for the fish.

There are other reasons too. Not does the shade help keep the fish out of the direct sun, lower water temperates and consumes nitrates in the water, it cuts down on possible algae growth.

In our line of work them not only makes or maintenance people happier it is much better for the filter equipment too.

Often the intakes, and filter lines have algae growth that cuts down on the flow rates. Or will clog filter media reducing their capacity and costs you money when filter media needs to be changed before it is actually spent.

So let’s talk about water lilies. If you are buying plants, on-line make sure you tell the seller where you live as there are tropical and hardy water lilies.  Our favorite water lily is the Pink Hardy Hybrid and the Wanvisa varieties.

These lilies can be used in both temperate and tropical ponds. As you see below they are the color of strawberry smoothies or meal replacement shakes, if you don’t believe us look at and tell us the colors aren’t the same!  The pink color will brighten up any pond, especially if that pond is in a shady space.

Hardy Pink Lily

The pads of these lilies are small clusters that spread out, so they pads cover quite a bit of the pond surface but leave areas of clear water where you can view the koi.

We like the pink color because there are no koi with that color, so the fish and lilies are not confused when being viewed.  See the featured image. Lily pads also make the pond look more natural.


Lilies are easy to care for, make sure they are planted in a heavy non-coated pot. Although ceramic pots will work, we still prefer plastic that have a large flat rock on the bottom for ballast, a sponge sphagnum moss for growing medium and covered with some large gravel to keep the soil in the pot.

We have several growers in the area, if you are interested, drop us a line, and we will get you in contact with them.




Medium Koi Pond with 3-ft Waterfall


Isn’t that a great looking pond and waterfall? This pond is about 12-feet by 16-feet, and the waterfall is 3- to 4-feet high.

We installed a Jebao 2500 pump with an Advantage bead filter on the system. Once a month we run a vacuum on the pond bottom due to the overload of koi in the pond.

We vacuum water into a 400-gallon tank and run an external filter on that tank, so clean water is pumped back into the pond. Once we finish cleaning the bottom of the pond we fill up the 400-gallon tank and replace with fresh water until the pond is full.

The best part is that nothing is wasted, we take the remaining sludge and 400-gallons of ammonia, nitrite/nitrate -rich water to a plant nursery where they water plants with it.

We also have to cull out quite a few baby fish each time that the owner lets us take to either give away or to sell.

Funny thing about this job is we find empty bottles of Somatropinne (a legal steroid) filled with dirt at the bottom of the pond when we clean it. Most of the time the labels fall off the bottle but sometimes a label gets caught by the filter.

Seems like the older teen-aged son must be taking it and doesn’t want his parent to know. I would think it would be easier to dispose of them off the property. Maybe he has a stash of them outside somewhere, so his mother doesn’t find them.

It is amazing what we find cleaning up ponds in affluent neighborhoods. To think a kid can afford these drugs. According to the price for legal steroids is upwards of $1,000 for a 3-months supply.

The filter, aeration, external filtering, and a 400-gallon water change is all this pond needs. The water is clear, and the fish are healthy and breeding like rabbits.