Water Changes – Refilling the 150

I love watching my 150 gallon tank during water changes. As I add water back into the tank, the fish go crazy, swimming through the bubbles and schooling tightly. My gold barbs group together, swimming throughout the tank in a hug pack. Here are some shots of the tank during the refill that I liked:

Bubbles 4

Bubbles Center Gold Barbs

Bubbles Oto

Bubbles Right


I used to use Seachem Prime during all of my water changes. If you don’t use this stuff, start! It works wonderfully, and a single bottle lasts a long time. For my 150 gallon, because it is so large, I began using Seachem Safe. Safe is just a concentrated powder version of Seachem Prime. Both are phenomenal products that have made my water changes easier. They also can be used for emergency situations, like ammonia spikes.


When doing big water changes, it is much easier to be able to add the new water right to the tank from the faucet (as opposed to individually treating buckets and pouring them in). To the tank being filled, add enough Prime or Safe to treat the full volume of the tank, then refill the tank with tap water as usual. Of course, if your tap water isn’t acceptable for water changes, this process won’t work well for you.

Ludwigia Repens Deficieny – Now Recovering



Finding the right balance in a tank between the plants, fish, and everything else can be a difficult task. For me, I have recently found that I wasn’t adding nearly enough nutrients to support healthy plant growth. The ludwigia repens seen above is a good example of my tank beginning to bounce back after a nutrient deficiency. The yellowish leaves with holes in them were the original tops of the ludwigia less than a week ago. Since I started dosing with more nitrates (via dry KNO3) and Seachem Flourish, in addition to continued use of Seachem Flourish Excel (for liquid CO2), everything in the tank has begun to grow quickly again with bright green hues.

Victory! At least for now… Hopefully they keep it up!