DSR Fe + (iron): PO4 Remover
DSR Fe + is used as a Phosphate remover (the effect as a trace element is negligible)
The active iron in DSR Fe + binds with Phosphate and precipitates. The precipitation can manifest itself in a light haze in the water that will be filtered or skimmed off again. This can be recognized by the rusty brown sludge and the black water in the skimmer.
Due to the light haze, Fe is best administered at night around 23:00.
Phosphate can best be controlled at a level between 0.04ppm and 0.08ppm
Below 0.02ppm causes coral bleaching. Above 0.12ppm will cause brown corals and migratory tissue loss. In very sensitive acroporas, the tissue itself can detach spontaneously.
Up to 0.24ppm a daily dose of 0.15ppm Fe + per day is sufficient
above 0.36ppm, a 2x daily dose of 0.15ppm Fe + per day should be assumed (12 hour interval)
The chelate part in the Fe + iron supplement also acts as a carbon source and as such also reduces nitrate and phosphate. Something to consider. As a result, nitrate may also need to be administered to maintain the nitrate stably at 1-2.5ppm.
Warning for sensitive animals:
Some doctors, emperors, coral butterflies and tridacna species are very sensitive to the dosage of iron. So pay extra attention when you dose Fe + and build up the dose slowly. Dose a maximum of 0.15ppm in one go and the measured value must never exceed 0.25ppm. Fe + is largely no longer measurable after 4-8 hours. If you wish to check the dosage, this can be measured after 20 minutes. Make sure your skimmer is working properly, because a brown, rusty sludge will form, which will remove your iron with bound phosphate. Since iron reacts with various elements (including PO4), it is normally not feasible to maintain this level continuously. The main purpose of measuring iron is to prevent iron from building up to harmful levels. Once it is determined that this is not the case, the measurement interval can be reduced, the lower the phosphate, the greater the chance of building up the iron content.
Phosphate is absorbed into the rock, the longer it is in it and the higher the content, the more phosphate is bound. This acts as a buffer. If the phosphate is removed from the water, the phosphate will leak out of the rock, therefore the one-time removal of phosphate will not yield an effective result. By first removing the excess in the water with the initial dosages, the leaking phosphate will also be bound and skimmed off over time if the Fe + dosing is maintained. Daily and gradual dosing creates a descending line of the phosphate from the beginning.
The advantage of a liquid phosphate remover is that the dosages are constant and controllable. With fixed removers, the media becomes saturated more quickly the higher the PO4 level. You have to keep a close eye on this, otherwise the value will increase again.
Due to the buffer effect, the phosphate can measure high for a very long time, to suddenly shoot it to immeasurably low. it can also measure zero and over-measure again a few days later. One must consider this
It is best to build up the dosage from 20/40/60/80 to 100%.
day1 = 0.03ppm
day2 = 0.06ppm
day3 = 0.09ppm
day4 = 0.12ppm
day5 = 0.15ppm max dose / day
Accelerated dosage build-up (at extremely high PO4,> 0.64ppm)
If you have a phosphate problem, you can build up faster with doses per 12 hours: day1 = (20 + 20), Day2 = (40 + 40), day3 = (60 + 40), Day4 = (80 + 20), from Day5 = 100%.
day1 = 0.03ppm, after 12 hours another 0.03ppm
day2 = 0.06ppm, after 12 hours another 0.06ppm
day3 = 0.09ppm, after 12 hours another 0.09ppm
day4 = 0.12ppm, after 12 hours another 0.12ppm
day5 = 0.15ppm max. dose / day and this may also be dosed every 12 hours.
Once the phosphate starts to drop and falls below 0.08ppm, reduce the double dose to a single dose.
You can convert PPM to milliliters with the DSR calculator.
(Download here http://dsrreefing.nl/forum/index.php?topic=385.0)
To do this, enter the content of the container, set your measured iron value to 0ppm and target value to the desired dosages. (or you set the target to 0.15ppm (100%) and calculate from 100% back to the other percentages)
With the calculator version v141122nib or later, the target value is determined on the basis of the measured phosphate value. With high phosphate this is 0.15ppm (you use Fe + to reduce phosphate) and with low phosphate this is 0.02ppm (you use Fe trace as a trace element)