Who Gives A Fish Forums

I'd second the UV sterilizer idea. Worked wonders for me. Also, maybe add some purigen to your filter. That stuff's magic for clearing up water.

duskrid wrote: ↑Fri May 09, 2025 5:02 pm I'm new to SPS. Does nitrate affect LPS the same way? My Duncan's been happy at 20 ppm, but now I'm worried.

Nah, Duncans are tanks. They'll chill in dirtier water than SPS. But if you wanna add Acros later, start dialing it down now.

Thanks for the tips. Flow's the same, salinity's at 1.025, temp's steady. No new fish. I'll keep an eye on them.

My Xenia stopped pulsing a few days ago. Water params are good, 0 ammonia, 0 nitrite, 10 nitrate. Tank is a 40 gallon with LED lighting, running for about a year. Anyone else had this happen? They were fine last week.

Good call, Foldo. Just remember to rinse the media in tank water during changes, not tap. Chlorine'll wreck your bacteria. My Discus started coloring up nicely after I switched to that routine.

I've been running a Fluval 407 on my 90 gallon Discus tank for a year now, and it's been solid. The flow is adjustable, so you can dial it down if they seem stressed. Just make sure to stuff it with extra bio media, like Seachem Matrix, to handle their waste. My crew's chill with it, no weird vibes.

Lighting's tricky with these guys. I'd avoid anything above 6500K. My 90 gallon has a Nicrew ClassicLED, set to 6 hours midday. Water's at 84°F, pH 6.8, and they're paired with Cardinals. The key is consistency, no sudden changes.


Spot on. I'd add that tannins from the driftwood help too. My ...

Yep, too much light freaks 'em out. I run mine at 50% max, 8 hours a day. Tank's got sand substrate, a few Java Ferns, and a sponge filter. They're way less skittish now.


Same here. I use a Finnex Planted+ 24/7 but keep it on the low setting. My Discus are in a 55 with CO2 and Amazon swords ...

Re: How I change water

Thanks Liz, I really appreciate the detailed explanation. Your system looks incredibly complex, I must admit. The original thread I had referenced was about installing a drip system and overflow for continuous water change, but I think your approach is more suitable for your ...