low oxygen environment

Can a test kit go out of date? No matter how many and what percentage water changes I do my test kit reads 80ppm on the nitrates in my tank. I just did a 20 percent on friday and sat morn I still read the same. what is causing this? any help would be greatly appreciated!

Hey all, I thought I would revisit a popular new theory on the remote DSB in such delivery methods as a 5g bucket. I have been considering re-doing my fish room a bit to make my filtration system a bit more efficient and have considered this. Now, my water volume is almost 300g so, I am not...

Sorry i cant post pics atm because my camera is broken, but basically i have a 75 gallon fish only tank, (planning to add coral asap), and on the filtiration i have a CA 1000 canister filter and a seaclone 100 protien skimmer, i want to add a sump and refuge but i seriously dont have room, the...

I am in the process of re-setting up my system. The tank is 2mx1mx1m (480UK galls) 250-300 kilo of LR-minimum stock at the moment. The sump is a 'marine pond' set into the floor, size is 1.5mx1mx600mm deep (120UK galls), it is stocked with red manroves, has a 6" DSB and about 40k of LR, when...

Live rock! well we have touched base ( no pun intended) on the various substrates. So to start off ..... What is Live rock any way?

Okay guys...bear with me, as this is gonna be a long post, but I REALLY need your help. The problem is...the wife-to-be can't seem to keep any fish. And I'm looking for any thoughts/opinions why, as I can't figure it out. At all. The details: More than anything, the woman has wanted a...

Sorry if this has been discussed before, but all I've found about this issue is how bad bio-balls and how they create this nitrate factory. Well a few weeks ago, I decided to listen to you guys and took out all my bio balls, but now I sit and look at the thing and can't help but think this...

I asked this question in the Atlanta section. Now I would like to hear from the world. Because I am still confused. Please help straighten me out! I have heard that since I have live rock in my tank, I do not need the Bio wheel in my hang-on Emporer 400. What does everyone think? I do not...

Heres my question... I am running a 30 gal with LR and a skimmer. Now... I have 2 hang on whisper filters. I use them to run a denitrate and a dephosphate. Now People argue not to to use hang-ons because of the nitrate build up. But On the filter that I am running the de phosphate I...

Exactly what kinds of phosphates will be found in a DSB? Some are stable, some not. Some are available, some not. Some need help breaking down, some don't.

Needless to say there are a number of different ways to filter your reef tank. What are the pros and cons of a "sump" system and a LR/PS only system?? Currently I have 55 gal tank and am wondering if I can get away with just LR filtering for me? I currently have 80lbs of LR and a hang on the...

Thanks everyone for the help with the selection of my RO/DI filter. I went with an ARS Oceanus 4-stage and I can't wait for it to arrive this next week. To my question: I'm thinking of setting up a sump. I've seen some people on a budget who use another aquarium inside their aquarium stand to...