a) Temperature range: 76-80 deg, but normally around 78 deg
b) Ph: 6.0.
c) I do not possess the GH test, but I only ever use purified RO water in the tank and during water changes.
d) I do not possess the KH test, but I only ever use purified RO water in the tank and during water changes.
e)Ammonia: 0.25 ppm, Nitrate: 5 ppm, Nitrite: 0 ppm.
f) Water change frequency: Once every 10 days
2. Tank set up
a) Size: 150 Gallons
b) Substrate: White sand, unsure of the brand, but it is not the super fine sand as the grains are somewhat large.
c) Filtration: 2x Aquaclear 110 and 2x Marineland Emperors
d) Furnishings: Lots of wood and plants, with a pvc pipe cave.
e) Other tank mates. Geophagus, Clown Loach, L091 Pleco, L007 Pleco, Ghost Knife, Bristlenose Pleco, Banjo Catfish, and four corydoras
f) How long has it been set-up? About 9 months, but the problems didn't occur until a couple of months ago.
g) When was the last new fish added? The L091 pleco but these problems were occuring before I added him.
h) Foods used and frequency? I use New Era plec pellets with the occasional zoo med pleco block. I used to use zucchini and sweet potato, but they trash the water.
3. Symptoms:
Hello everyone, thank you for reading my thread. I am having trouble keeping my two royal plecos healthy. The two plecos I have are a 9" L330 and a 10" L191. These two normally stay out of each others' way, but a few weeks ago, the L191 started to lose weight and developed a massively sunken in stomach. I took him out and put him in the hospital tank and he appeared to recover. Shortly after, the same symptoms affected the L330. So I put the L191 back in the main tank and the L330 in the hospital tank.
Around this time, the L191 began showing symptoms again, so I treated the whole tank with PraziPro and Metroplex thinking parasites were responsible. After the performing the treatment, the symptoms remain, so I once again swapped the plecos, putting the L191 in the hospital tank where he currently is, and the L330 in the main tank. Depsite treating the L330 as best I could, using API General Cure (because apparently it contains Praziquantel and Metronidazole) and Paraguard, within a few days he began losing weight, and now he won't eat the medicated food I have tried offering him.
4. I have attempted to medicate using Metroplex, Prazipro, and Paraguard, but so far nothing seems to work. I want to medicate the whole 150 gallons, but I am unsure what exactly I need to use to treat it. I have tried using medicate food using the plec pellets with Seachem Focus, Seachem Metroplex, and Garlic Guard, but still the L330 won't touch it
![Sad :-(](./images/smilies/icon/sad.gif)
5. Metroplex, Prazipro, Paraguard, API General Cure. Nothing seems to rid the royals of whatever is ailing them
![Sad :-(](./images/smilies/icon/sad.gif)