Organic Waste and Nitrogen Cycle

Weeks ago, my roommate and I bought an aquarium,an external filter, a number of Angelfishes,not to mention a large piece of bog wood as a starter for the decoration and black sands for the floor.Once we settle down in the room, we began to rinse the substrate,the wood and the dusty aquarium.As soon as we set up the aquarium, we started to filled in gallons of Reverse Osmosis, RO, water (despite with the water crisis in my hostel) into the aquarium. We release the fishes into the newly set up aquarium. My roommate was happy with the view, so do I.
However, few days later the water gets cloudy, and days after that, one of the Angelfishes die. My roommates changed the water by himself in the end. The guilty of not doing anything struck me.
It reminds me of myself when I had an aquarium of my own for the first time. I was in Matriculation if I am not mistaken. My aquarium consists of guppies, and substrates. I reared guppies and all of them DIE within 3 days.
I was curious, and did some research. I found out there was no oxygen supply,thus,I bought few aquatic plants.(and some new guppies). Again, the guppies die few days after that.
Filled with curiosity,I decided to read more books and did more deep research. As a result,I found out about NITROGEN CYCLE and what is more important,the aquatic plants i bought last time was nearly wilt,so the plant couldn't really contribute to the nitrogen cycle.

NITROGEN CYCLE is the process where the ammonia is cycled into nitrate where the plant uptake the nitrate as a fertilisers.

"UPtake,huh?" so there i was, acting like a smart alec, dashed to the the nearest pond at my hostel and collect few floating plants and put it into my aquarium.
"there, plants with roots should be able to take in more nitrate." Happily, I smiled and proud with my own act.
On the next day, all fishes die. and when I read about aquatic plants, I found out the plants that I took were 'Water Hyacinth' which are well known of its ability to absorb and store CYANIDE. The guppy must have eaten the roots since they are frenzy grazers!!

Kitten Delivery

Two days ago, I received a call from my neighbor in the middle of the night saying that he wanted to give me the stray kitten.

"WHA!!!??" , i gasped, then I recalled that I met him after class few days back where he told me that he found a stray kitten and its condition is not on tip top.


"Oh,sure. I'll wait you downstairs", was what I replied, trying not to disappoint my neighbour. I was surprised myself when the lazy me decided to take on the case.
I searched for an empty box in the bathroom and luckily i found one. I rushed downstairs holding a box and found him waiting me with a kitten in his arm.
It was dark at that time so I couldn't really see how's the kitten looks like.
He put it in the box i was holding, and with a small chat and goodbye, I went back to my room.

I opened the box just to found an orange and white fur kitten that have heavy mange on its ears,legs,eyes,paws and not to mention, it has pot belly too.
It looked weak,wet and cold. The kitten tried to meow but it couldn't.

There's nothing I can do except prepare a bed in the box using my old clothes. I gave him cat biscuits from the emergency ration that I kept for some cats, gave him a fresh water to drink, and close some part of the box lid. It fell to sleep after enjoying its meal.

Moments later,my roomate came back from the library, and I asked him to do me a favor...
On the next day, my roomate namely Afiq brought the cat and I to V-Care clinic and the doctor there examined it before he gave the cat a treatment ; Ivermectin and Vitamin B.

While the doctor's assistant was examining it, she asked me if the cat had a name so that they can filled in the patient record.