I thought of providing an update on my tank. For the past two weeks I made the following changes. Every time I make a water change the algae comes back with a vengeance. I added a new plant rotala indica (shown in the picture). Although the plant is growing, you can see the algae quickly developing on this plant. Also, prior to making frequent water changes and using turkey baster for gravel to improve gravel vacuuming, my Amazon swords were free of algae. Now, they are infested with algae.
Here are the changes I made.
First week change:
1. Incorporated turkey baster for cleaning
2. Increased water changed to twice a week (25% each time)
3. Pruned the algae infested rotala Hra
Second week change:
1. I suspected that frequent water change is having a negative effect on beneficial bacteria. So, started adding Seachem pristine after every water change. It looks like there is some change, but the algae growth is relentless
2. Removed carbon and changed to Seachem Purigen
Parameters after water change:
1. Nitrate levels reduced from around 5-10ppm to 0-5ppm. Other parameters are pretty much the same as what it was earlier. That is:
Ammonia 0-0.25 ppm
Nitrite - 0ppm
Ph - 7.6
GH - 50-100ppm
KH - 0-50ppm
2. Light 6hrs, Co2 – 2 bubbles/sec
Currently, my plan is to introduce more fast-growing plants. I still don’t know what mistake I am doing. Even after changing water multiple times (and gravel vacuuming) the algae does not seem to go. In fact, it comes back strong. Any help/suggestion is appreciated.