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Hi All, We've been using sand as substrate in our tank for a couple of months now, and its starting to look quite unpleasant due to algae growing on it. Does anyone have any suggestions on how best to (a) remove the algae, and (B) prevent it from reoccurring? The tank contains Discus so I'm...

Have a read of other discus threads first. You should really have 5 or 6 discus to stop them fighting, and therefore a large tank with good filtration etc. Also the temperature needs to be up at around 30C. Tetras seem to be popular companions, and we also have a couple of Clown Loaches and...

I add a bucket of the brine for every 5 buckets of RO. The brine is the waste water from the RO unit and will have passed through the particle and carbon filters to remove heavy metals and chlorine etc, but will keep some of the salts in solution. You can check the hardness of the brine, then...

I found that after a year or two, my bottle of Gh tester stopped working, i.e. the colour never changed. I tried tap water and RO water, no difference. My conclusion was that the stuff had gone off. You might want to try some RO water or distilled water, and see if that changes it.

We've always had a pleco or two in the tank with the discus, with no problems (okay, there's always a first time). They seem happy in the warm water (30C) and IMO help to keep the tank clean. Sure they produce waste themselves, but it tends to gather in one place and is easy to syphon out. We...

I agree. However I suspect that this temperature variation is not uniform throughout the tank, and is probably a result of the placement of the thermometer and the water circulation around it.

We've had discus for a few years now, and they're not so hard to keep. However, they do like regular water changes, and we use RO water to remove the hardness, although we don't do anything more to bring the Ph down further. We also keep our water at about 30C. Never tried breeding them though.